I could be mistaken, but I don't believe broaching is *technically* drilling. They both bore holes sure but I think semantically a broach doesn't "drill". How did he think atypical holes are made?
‘Mathematics seems to prove that you can’t make a square hole with a spinning bit, but lathe workers do it anyway because they don’t care what mathematicians think’
I was waiting for the punchline as well. How can you possible spin a tool with a hex profile and produce a hex profile in the workpiece? Even now that I see that the tool and the workpiece are spinning together, I'm still not entirely sure I understand how the off-axis nature of the broach makes it work.
I mean, its actually a common technique used by machinist all the time, nothing magical about Broaching. that said, Tony just Makes the best videos about all this stuff.
But where was the red one ? I was waiting for the red one and it never appeared. I'm sukling. Also, for some strange reason, once he'd put the pen down, it stopped changing colour - how come ?
It's much easier to see when this is done in a mill rather than a lathe. Then it's just a wobbly broach, and the chisel analogy is easier to understand.
One of the best things I like about your channel is your ability to explain kind of complex stuff to dummies like .e. Your camera work is also awesome. Thank you a bunch...honest.
Yeah, that was an interesting video. Didn't have much of an idea of what a "broach" or "broaching" was until after watching this entire video. An engaging video from the start. Made me want to..uh, watch more. Hehe.
Y'know, I always remember ToT having the best editing on TH-cam. Then I watch one of his videos, and remember that I was wrong. TH-cam cannot contain this majesty. This is the best editing for any visual media.
Well said. I was ready to "attack". I love your lead in. (Got me wondering!) He is so good. Thanks, Nosnorbin. You have put things into perspective. Tony is going to be called on to "at least" write for mainstream productions. He may not want that, though. I don't know. Tough business.
20 years ago he would have had his own show on cable. This is what I love about TH-cam! Despite all the politics and crap, we still have these excellent productions. Hope it lasts!
I just figured it out. Our favorite machinist was a wise ass, one time too many, in school, so they assigned him to shop class. "Let's see how funny he thinks machine tools are." Thank goodness for TH-cam. Most comedy clubs aren't wired to accommodate a lathe.. 🤷♂️
I am trying--really, really trying--to stay happy and contented with my nice, reasonably well-equipped wood shop. But people like you, TOTony, are making my contentment with all things sawdust wear thinner with each passing, magically-edited, dad-joke-filled video.
I'm not a machinist, not into machine type work, I am actually a cabinet maker, but, you make this very very interesting to watch, your videos are awesome!!
Hey This Old Tony, I am looking for an opinion before I just go and do what I'm going to do any. I have no delusion that you watch my videos or know what my project is. Anyway, I am needing to fabricate a pile of special brass bolts for my hand. I wanted to do torx heads. Did you I u consider using a torx driver bit that was reground to provide the clearance angle to roto broach, rather than buying tooling? Lmk if you have thoughts on the matter. Thanjs, Ian
While wathing your videos Tony, i wish to have powers to erase my memory, and watch your videos over and over again, and feel the same excitement. Great video as always.
Luckily I have ADHD so I can do that! It takes about 2 dozen watches for me to memorize something, which I usually reserve for 80s action movies, but TOT is definitely just as worthy.
Well, the DuMont company in New Jersey makes the best there are. I inherited a bunch of broaches from my grandfather and one day noticed they were all branded "DUMONT". Thought he just marked them. This rotary broach system is pure genius. And Tony's explanation of "Howzit do dat" gets 5 stars.
I'll be damned. When I was a industrial mechanic, these would have been spectacular to have. Even though I have no use for them now , I love learning about new stuff to me like this. Fantastic video.
My cat could not care less about the bird noises. She only cares about getting close, sleeping, the occasional belly rub, and food. She is almost like a dog!
@@SpatialGuy77 Seems like a lot of comments to ToT are kinda off-topic, but so what? Jesse said something funny about his cat. Is it not funny for my cat to act like a dog? She even eats melon. Very strange.
Here's my comment: I think I have a well-developed sense of humor, but it is different from yours. Oh, this doesn't mean I don't appreciate yours - quite the opposite. Just when my funny bone it set for one kind of laugh, you go the other way, and it slays me. For example, the jump cuts in your audio always make me laugh, and I can't really say exactly why. I suppose you could sum up your goals as (1) Impart some information, and (2) Be entertaining. You hit both nails squarely on the head (to coin a phrase). I've never touched a machine tool in my life, let alone even heard of rotary broaches but now, 15 minutes and 50/60 chuckles later, I have a pretty good idea of what they are and how they work. I do know a bit about making videos, so I appreciate all the effort you put into yours. They are gems. Thank you.
I once asked my wife if I could Rotary Broach her, instead of a ending up with a funny shaped hole, I got a kid.... Were my speeds and feeds all messed up?
I'm not a machinist at all, but your videos are pretty approachable and supremely edited. I've wondered how they make the heads of screws and such with the funny tips, now I know. Thanks!
@@ThisOldTony My great great great great grand father has kept me up 3 weeks now no sleep he says Rotary Broaching is like witch craft .. now that I got some sleep and could watch the video with out him talking ,, maybe you could do another video , with some slow mo work .I understand you are very busy this video was very top notch .. now instead of hearing the old great great great great grand father I am seeing witches ,, ugh can not win ..
@@tabaks What? Both are correct. The bearing is fixed at a 1 degree angle. It is radially loaded. If it gives up it will basically fall apart, at high speed. Hence "Warzone". Also, Lathes have been found in the middle of the Sahara Desert, with no bearings. This is what Tony is all about! Puns! :-) Yes, he is a serious Master Craftstman, but he doesn't have a Morse Taper up his...well, Can. I am wondering where "Trolling" entered your mind.
I could watch this old Tony cracking wise and making stuff all day. The dad jokes are 24 karat gold and the quality of his work is amazing. You'd struggle to find a company to make an adaptor that beautifully these days without needing to remortgage. Beautiful work sir! May the farce be with you!
For some reason whenever I watch Tony's videos I always feel like I ought to subscribe even though I'm already a subscriber. I think there must be something subliminal going on.
I couldn't for the life of me see the advantage of the rotary broach over just pushing a hex straight down in a press. Now I know about the slight wobble, makes perfect sense now! Thanks, great video!.
"This new engine oil plug should only take me 6.5 hours instead of 7..." Funny as hell,so funny I cried..after it hit home and realized I do the same thing....but at least we can laugh at our economically idiotic, ridiculously undertaken projects that we know ahead of time that if we just worked at McDonald's for the time we spent in labor,added with our materials costs,electricity to operate,machines to pay for the costs to buy then maintained, gas money for heater ,cars to drive for trips to buy misc. Things,so on and so forth,,,,,add it all up along with the 7.25$ an hr from McDonalds and you just made a plug that cost 175$.....and could have bought one for 4.75$.... And we loved every minute of it and would do it again ....and have many times over...as long as we ..just don't let the wifey read this comment ,we lovingly accept the added cost of the plug,and making it by hand and all that it entails
Otis similar to the quest I go on every time I search for American made items. Some people just don’t care, but some of us take pride in the fact that we, or someone we might know, made something that we use every day.
Yeah but if you just bought it from the dealer it would have been chinaluminesium and failed again, the same way it failed the first time. The bronze plug will outlive the rider, statistically speaking.
@@mikedavis7065 OK, I'll play. We'll ignore for the moment that we're talking about TOT who is American. Please enlighten me with some of the many countries that use '.' as their decimal point and '$' as their currency symbol and place it after the number.
@@fixitrightolson2110 I've seen a couple different wobble broach holders for sale on Ebay between $200 and $400 usd. I have no idea how good they are. Probably OK for hobbyists. Name brand start at $1000 as in sure you're aware.
The moment you said a broach can have any form, I thought you would introduce the heart shaped broach. At least you mentioned it, that really gave me the feel that someone is on the same wavelength with me... although it might be an invisible wavelength with no use. :P Love your videos :)
Indeed. Ought to work with plain old round things too, using a slotted tube to distribute the pressure from the chuck teeth so they don't leave indentations in softer materials.
My first reaction was: wow this is genius, I need one for those custom bolts I never make. Then I saw the price and thought, you know what, those M8 Allen bolts aren’t so bad after all!
Poly wash bottles (AKA squirt bottles) are wonderful not only around the lab, but also the home and shop. I have about a dozen of them and use them for 3 kinds of oil, plain water, soapy water, paint thinner, lacquer thinner, and acetone. You can dispense 1 drop or a stream. I like them because they are spill-resistant and work upright from full to empty.
Hey this old tony. I love you, this old tony. When you upload, this old tony, I click right away, this old tony You’re my adopted and only dad now, this old tony❤️
5:28 People may not notice or appreciate the subtle details you do on your videos, but pay attention and you’ll see lots of creative ideas right in front of your eyes! I still don’t know exactly what you do/did for a living before TH-cam but I think I’ve heard you saying something about programming. You have so many skills combined with your creativity that you could do advertising, 3D modeling, video production, movie production, movie directing, standup comedy, web designer, and the list goes on! You could even do well as a machinist!!!! The effect of the text coming back with the tail stick is simply brilliant! Subtle things that add value to your videos!!!
@@tracylemme1375 That's assuming his mill is 2MT, and even if it is he could have a 3/4" 5C or ER collet already I'd rather leave that shank alone and make an adapter, just because...; Peter Slutsky , Good idea, and not too hard since he just made one. MT's with a tang are typically used on lathe tailstocks and drill presses, and are just jammed home. You need the tang to be able to drive them out with a wedge. MT's with a threaded hole in the end are meant for tools with a draw bar. In a pinch you can make up a short tang with treads that screws into the end of a draw bar MT to give it double duty.. I don't believe there's any reason to harden them for occasional use.
Adapters from 30 mill taper to 2mt are everywhere. A 3mt/2mt sleeve should be with every lathe with a 3mt tailstock quill. The tang is used not only for removal but also to help drive the tool. The taper of a tool should never be hardened except with a nondriving tool ie live center. This allows the tapers to conform with each other.
Re. His next vid. There you go, he's got a 3/4" tool holder for that Bridgeport style taper shank. Yes, lots of adapters available, and more you can make, I think I've got most of them . It's likely that you introduce some error that may or may not be important with everything you add between the quill and the tool, though. Real question, not argument; how does a tang aid tool insertion?
Great video as usual, you might want to keep an eye on the galvanic corrosion/electrolysis with bronze /brass with aluminum, I might not be an issue for this application but something to think about. Thanks keep up the good work!
I love learning this kind of content. Especially with your humorous stories and small comments. The premature video cuts also are... just perfect! Don’t stope making videos. I love this.
Thanks, I watched another video where someone used one, and couldn't for the life of me figure out why it needed to spin. So, I looked it up, and watched the first video I saw, yours! You did a fantastic job of explaining it in layman's terms.
I'm a 53 year old man and I just clapped my hands and said "oh boy!" when I saw the notice. But I'm still trying to understand how a rotating hex shaped cutter imparts the hex shape hole....I'll go have to go get some hex bits and tilt it a few deg and check it out!
I can’t tell you how inspirational your videos are, and then I hit the shop and get frustrated that projects take me longer than 14:58 :-). Keep up the good work.
Took a while, but the penny finally dropped. The key is the offset in the mount, so the corners cut one at a time. Brilliant demo using the wiggling chisel. Best "Howzit do dat" I have seen in ages. Thanks! -- Subscribed
Hi Tony, where did you obtain the broaching kit, what make is it? I was also thinking of making one but if I can obtain one at a reasonable price I would rather buy one. Great channel keep it up....
I always wondered how they cut hex holes! Never knew about broaches till date. Amazing explanation. You are a good teacher. And who made this video. Thanks to him/her also. Excellent editing, almost like those professional 6 figure salary movie editors.
Excellent. I never heard of a rotary broach and now I have a vague idea of how it works. Plus I thoroughly enjoyed the video. Another standard TOT video, in other words, wonderful!
Hi Tony. I hope you and your Family have a very Merry Christmas and a happy new year. I have a question. Can you use a Rotary Broach to make a Keyway? If you Milled just one Cutting Edge would that work? Thanks for making all these Videos. I have really learned a Lot from your Videos.😁👍👍
I saw a video the other day of someone rotary broaching a 'D' shaped hole, so possibly... Though Tony has the better solve with a broached square and then drilling. But that might be awkward to get right if the center of the hole falls inside the broached hole. I imagine you'd have to take extra precautions of some sort to prevent the drill from lateral shift, since it would be contacting the side unevenly...
I maintain a fleet of model train locomotives for a museum. The Athearn brand have brass flywheels with hex drive shafts! I will be making my own real soon, thanks to you! OUTSTANDING!!
If you look closely at the tip, you'll see that it's slightly concave like a shallow dish. That gives the points a relief when cutting, and makes them pointy-er. There is also a slight relief cut behind the edges on the hex shaft. If you notice, the cutting edge is slightly wider than the hex shaft's base. That allows clearance for the tool to come in at an angle so that only one of the points contacts the hole and cuts into the work a little. Then the tool and the work turn the same amount but because the tool is at an angle, the first point pulls out of the work and the second point rotates into the work and cuts a little on the second corner in the workpiece. This continues so that each rotation cuts a little out of each corner until you reach your desired depth. Then, FOR HEAVEN SAKES, PULL OUT BEFORE IT'S TOO LATE!! ;)
Anthony, Its a ROTARY broach.... Get it.....? The tool engages the material ROTATING (Yeah?) in the lathe chuck jaws. When it does that, It (the tool) also spins at the same speed. So they are synchronized and not moving in relation to each other, rotating at the same speed, in concert, in unison, etc. Now the two are spinning together, the broach is pushed into and through the precisely sized hole already in the material, carving or forming a (in this case) hex shaped recess. The reason the whole process is performed whilst rotating is to allow the broaching tool to wobble slightly off center, as Tony explains by 1º. This allows the broach to contact (and cut) only on 1 side at a time, during each revolution, this allows each broached channel to form incrementaly, drastically reducing the effort required. See IKW's explanation within this comment section. Either all that, or (and this is what I know to be real) Tony really is the Dark Lord and uses witch craft and trickery to accomplish his work.
A great machinist, an incredible video editor (person, not software) and a great sense of humor too. When you used a Zip disk to cut the nut, did you use the 100 MB version or the 250 MB version?
I wonder how many people you're going to confuse with that statement. Too bad there's not a button for 'what?'. Then we'd have a counter for the youngins who have no idea what you're talking about. Thanks for the reminder of the good old days... ;)
@@Broadpaw_Fox If I can confuse only one person a day, it's been a good day. I occasionally take to our makerspace (public library) an old Zip disk still in the jewel case. On the reverse side of the liner notes I've written, "geek detector." That usually gets a laugh because the only people who pick it up already know what it is.
Another great video TOT, your wit is amazing. Honestly, I feel so lucky that I get to watch your stuff. Thanks for making me smile and laugh every time!
I busted out laughing so hard when I saw that, then the .1" depth of cut popped up and that slayed me lmao. I aught to make a little video like that showing our Monarch at work, we can take 1/2" cuts with that beast. It's weird hearing chips hit the ground that sound like solid chunks of steel lol, they have that "ting" sound you only get with thick and hard pieces of steel.
You really should make some round broaches. They would make a nice addition to your tool set.
That's the most ToT comment I've ever seen. Well played sir
Got beer up my nose, couldn't hold the laughter long enough.
Bahahaha
I’d kill for some round broaches
OK, so, hear me out. What if you put a little helical groove up the side of the broach. Then the metal shavings would be free to leave.
Seriously, the best editing on TH-cam .
Indeed.
...altough I might have taken off my wedding ring while editing XD.
Marwin Thedja Wanna explain the joke to me? 😂😞
When my comment gets 65 likes by the time I'm done watching the video, despite the lack of tree carcasses, I believe I've hit the nail on the head.
@@marwinthedja5450 I'm surprised he hasn't had 'Subscribe' engraved on it yet xD
Easily. I've yet to see better.
You broached the subject matter well. Most people who try are rather boring.
r/boneappletea
Yeah you did! Well done.
Mark Speir 😂😂😂👌🏻
I remember AvE drove the point home quite sharply as well.
I saw that one coming.
I just recommended this to my statics teacher after he said that drilling square holes was impossible
@@oof578 there are many fields of engineering, you can learn a lot of stuff your whole life and still u will not see most of it.
I could be mistaken, but I don't believe broaching is *technically* drilling. They both bore holes sure but I think semantically a broach doesn't "drill".
How did he think atypical holes are made?
‘Mathematics seems to prove that you can’t make a square hole with a spinning bit, but lathe workers do it anyway because they don’t care what mathematicians think’
You DO know it doesn't spin, it wobbles it's way in....like the way a duck walks?
IceFalken Ace that’s a great analogy for how it works! Loved it
For more than ten minutes, I thought this was just a very elaborate joke. Now I want a rotary broach. Just need to find a use for it...
Der Offi me too!!!
I was waiting for the punchline as well. How can you possible spin a tool with a hex profile and produce a hex profile in the workpiece? Even now that I see that the tool and the workpiece are spinning together, I'm still not entirely sure I understand how the off-axis nature of the broach makes it work.
I mean, its actually a common technique used by machinist all the time, nothing magical about Broaching. that said, Tony just Makes the best videos about all this stuff.
Same here, never seen it before
I did too, which lead me to do some research on these tools. They really do exist. Wow!!! You learn something new every day!!
Great, now I need a rotary broach and a motorcycle to make a fill plug for.
I'm down a lathe, a shop, and a wife too.
...not sure if I'm winning or losing now that I add that list together.
Get the lathe and shop first. Wives will come and go, but a great shop is forever!
Unless the wife makes you sell it off for her half....
@@Blazer02LS
@@richardlangford2658 Do tell!!!👍👍
The split-nut clamp to hold a threaded part is genius. Always a pleasure to watch your videos. Thanks!
Pleasure to watch your videos. Thanks!
not the most concentric work holding but... life is short. :)
I added that to my list o' great shop hacks.
@@ThisOldTony.1
@@ThisOldTony is the benefit of the split so you can get it off easier? I've done this before with a normal nut and had performs getting it off
“I’ve wanted one of these ever since I learned that they exist” this is exactly my attitude towards tools
and that's how I ended up with parts and tools for various projects yet to be thought of
I keep buying tools i'll probably never need just because...
Yep. I have tools that do shit I’ll never need. But I CAN rub it in my buddies faces that I have them. Lol
me too... isnt a tool I've discovered I didn't want, yea NEED.
Those sharpie swaps at the start were so smooth
But where was the red one ? I was waiting for the red one and it never appeared. I'm sukling. Also, for some strange reason, once he'd put the pen down, it stopped changing colour - how come ?
I've never caught that.
@@millomweb +
The amount of dad jokes in this video is impressive
I can only hope the "not funny shapes" is a Raising Arizona reference.
They are gold !
7:04 😂
ALL ABOUT DAD JOKES
The tension was unbearable as the broach closed in on the aluminium. Great video as always. 👍🏻
Worthy of a Hollywood production! The tension was so thick, you could cut it with a..uh..Broach! :-)
@gareth Thomson I read your name as Grant Thomson Rest In Peace
And the blue tape....the tension was almost unbearable!
I do not speak English very well but man! This guy's humor is international.
You type English better than 75% of British people.
And 85% of us Americans.
This one is funny, also. This is LockPickingLawyer. He's getting into his wife's Beaver. 🤣
th-cam.com/video/TRozAbaKs9M/w-d-xo.html
He also did one about his tiny Coq(sic) lmao 🤣
th-cam.com/video/k9VewWKfH_0/w-d-xo.html
@@CreatureOTNight Thats nott troo, thats a liy
someone get the slo-mo guys into TOT's studio, I refuse to accept that this isnt witchcraft
Seconded, though I only want to see some hot oiled up slo-mo lathe chipping action
It's much easier to see when this is done in a mill rather than a lathe. Then it's just a wobbly broach, and the chisel analogy is easier to understand.
AvE did a video on it where he build one himself when I remember correctly, where you could kind of see it and he explained it nicely
Oh boy I don’t understand how it just doesn’t chew up the hole. TOT has special powers and I just watch for the editing and the jokes.
@@mikecabral1579
Now that I think of it, it pretty much works like lockpicking.
I love watching Old This Old Tony reruns, it's like Future to the Back.
One of the best things I like about your channel is your ability to explain kind of complex stuff to dummies like .e.
Your camera work is also awesome.
Thank you a bunch...honest.
Yeah, that was an interesting video. Didn't have much of an idea of what a "broach" or "broaching" was until after watching this entire video. An engaging video from the start. Made me want to..uh, watch more. Hehe.
Y'know, I always remember ToT having the best editing on TH-cam. Then I watch one of his videos, and remember that I was wrong.
TH-cam cannot contain this majesty. This is the best editing for any visual media.
Well said. I was ready to "attack". I love your lead in. (Got me wondering!) He is so good. Thanks, Nosnorbin. You have put things into perspective. Tony is going to be called on to "at least" write for mainstream productions. He may not want that, though. I don't know. Tough business.
20 years ago he would have had his own show on cable. This is what I love about TH-cam! Despite all the politics and crap, we still have these excellent productions. Hope it lasts!
@@ichoozjc yeah. I've been spending too much time this weekend watching news and wanted to find something more cheery. This works well.
I just figured it out. Our favorite machinist was a wise ass, one time too many, in school, so they assigned him to shop class. "Let's see how funny he thinks machine tools are."
Thank goodness for TH-cam. Most comedy clubs aren't wired to accommodate a lathe.. 🤷♂️
I am trying--really, really trying--to stay happy and contented with my nice, reasonably well-equipped wood shop. But people like you, TOTony, are making my contentment with all things sawdust wear thinner with each passing, magically-edited, dad-joke-filled video.
Don't watch AvE, he'll hurt your feelings about woodworking. lol
I'm not a machinist, not into machine type work, I am actually a cabinet maker, but, you make this very very interesting to watch, your videos are awesome!!
Hey This Old Tony, I am looking for an opinion before I just go and do what I'm going to do any. I have no delusion that you watch my videos or know what my project is. Anyway, I am needing to fabricate a pile of special brass bolts for my hand. I wanted to do torx heads. Did you I u consider using a torx driver bit that was reground to provide the clearance angle to roto broach, rather than buying tooling? Lmk if you have thoughts on the matter. Thanjs, Ian
I really hope this comment reaches TOT's eyes. Both of you continuously blow my mind
Hey you're the hand guy! I love your work! It's almost enough to make me want to lose half my hand.
Almost.
You just know it's gonna be a good evening when ToT uploads something new :-D
'hanks!
ToT's videos always turn bad evenings into great evenings.
Always Great.
Truth. He never disappoints.
This is like the best place in TH-cam. There is no other channel where I can learn and laugh that much. Thank You Tony👍
While wathing your videos Tony, i wish to have powers to erase my memory, and watch your videos over and over again, and feel the same excitement. Great video as always.
💯
Luckily I have ADHD so I can do that! It takes about 2 dozen watches for me to memorize something, which I usually reserve for 80s action movies, but TOT is definitely just as worthy.
pro tip: If you wait about a year, you can watch a video again and it will seem almost like new
Sounds like you need a rotary broach - and a life!
Whoever invented the rotary broach is a galldang genius.
Well, the DuMont company in New Jersey makes the best there are. I inherited a
bunch of broaches from my grandfather and one day noticed they were all branded "DUMONT". Thought he just marked them. This rotary broach system
is pure genius. And Tony's explanation of "Howzit do dat" gets 5 stars.
I'll be damned. When I was a industrial mechanic, these would have been spectacular to have. Even though I have no use for them now , I love learning about new stuff to me like this. Fantastic video.
The bird noises were convincing enough to make my cat flip out and go into full hunting mode very single time
My cat could not care less about the bird noises. She only cares about getting close, sleeping, the occasional belly rub, and food. She is almost like a dog!
Yoda, What The... did you watch this? It’s not a cat video. At least Jesse’s very exciting cat story was video related...
@@SpatialGuy77 Seems like a lot of comments to ToT are kinda off-topic, but so what? Jesse said something funny about his cat. Is it not funny for my cat to act like a dog? She even eats melon. Very strange.
YodaWhat - sorry, was just kidding...
my puppy freaked out too haha
Here's my comment: I think I have a well-developed sense of humor, but it is different from yours. Oh, this doesn't mean I don't appreciate yours - quite the opposite. Just when my funny bone it set for one kind of laugh, you go the other way, and it slays me. For example, the jump cuts in your audio always make me laugh, and I can't really say exactly why. I suppose you could sum up your goals as (1) Impart some information, and (2) Be entertaining. You hit both nails squarely on the head (to coin a phrase). I've never touched a machine tool in my life, let alone even heard of rotary broaches but now, 15 minutes and 50/60 chuckles later, I have a pretty good idea of what they are and how they work. I do know a bit about making videos, so I appreciate all the effort you put into yours. They are gems. Thank you.
That's what he does. It's great, and I'm happy to be here to witness it.
Him and AvE are awesome.
I once asked my wife if I could Rotary Broach her, instead of a ending up with a funny shaped hole, I got a kid.... Were my speeds and feeds all messed up?
You had her wrong side up and not enough coolant!
you had to put a little layer of latex on your broach instead of broaching oil
You used too much coolant and didn’t back the broach out fast enough.
You stayed in too long, you’re supposed to pull out as soon as you bottom out
You may have had the angle of your dangle wrong.
I'm not a machinist at all, but your videos are pretty approachable and supremely edited. I've wondered how they make the heads of screws and such with the funny tips, now I know. Thanks!
When the lathe becomes a slot machine :P Best editing on YT, I am appreciateing the time spent on it :P
I'm shooting a video literally today in which I need to make a hex hole. This couldn't be better timed... Thanks! :)
I'll be watching!
Boo
@@ThisOldTony My great great great great grand father has kept me up 3 weeks now no sleep he says Rotary Broaching is like witch craft .. now that I got some sleep and could watch the video with out him talking ,, maybe you could do another video , with some slow mo work .I understand you are very busy this video was very top notch .. now instead of hearing the old great great great great grand father I am seeing witches ,, ugh can not win ..
It's all fun and games until the bearing gives up and the lathe becomes a warzone :D
I thought lathes just tend to walk around the floor when they lose their bearings.
@@pekkasaarinen2902 Okay take your upvote... those were to many levels of joke...
An intensely worder, poorly fact supported trolling.
@@tabaks What? Both are correct. The bearing is fixed at a 1 degree angle. It is radially loaded. If it gives up it will basically fall apart, at high speed. Hence "Warzone". Also, Lathes have been found in the middle of the Sahara Desert, with no bearings. This is what Tony is all about! Puns! :-) Yes, he is a serious Master Craftstman, but he doesn't have a Morse Taper up his...well, Can. I am wondering where "Trolling" entered your mind.
It's ok though, war zones make good viewing. Lol
Perfect way to close out the weekend, a TOT vid.
Agreed
I truly appreciate how you can be extremely entertaining while still managing to sprinkle in a lesson or two!! Thank you!
I could watch this old Tony cracking wise and making stuff all day. The dad jokes are 24 karat gold and the quality of his work is amazing. You'd struggle to find a company to make an adaptor that beautifully these days without needing to remortgage. Beautiful work sir! May the farce be with you!
1) An unused can gathers rust.
2) The tape job on your broach would make Red Green proud.
Painters tape is a poor excuse for duct tape(not to be confused with a duct ape), Red Green recommends and exclusisivly uses DUCTape.
For some reason whenever I watch Tony's videos I always feel like I ought to subscribe even though I'm already a subscriber. I think there must be something subliminal going on.
Thanks, I just figured out why I have an urge to order a bunch of magazine subscriptions after watching a ToT video!
Do you know what I think you are on to something. Myself and 612,000 people have been duped somewhere and we must investigate forthwith !
Comedy in the right amount cures most anything. ToT is a witch doctor in that department.
@@routercnc9517 but the same thing happened to me on your channel
@isaac garcia sorry about that, hope you are enjoying the content !
Coincidentally, I happen to be wearing my "This Old Tony" T-Shirt today!
Haha, me too
Give Ken his t-shirt back!
Woah thats weird I have my "Ken Davis" shirt on today.. Small world
Yep. Me too.
I was not wearing mine the day I did not watch a TOT video. Freaky!
I can't begin to imagine the work that goes into these videos.
Likewise. Not just the technical knowhow but I'm always amazed by the effort that goes into the editing, lighting and script/humor
I couldn't for the life of me see the advantage of the rotary broach over just pushing a hex straight down in a press. Now I know about the slight wobble, makes perfect sense now! Thanks, great video!.
"So what happens in this episode, This Old Tony?"
Magic.
"This new engine oil plug should only take me 6.5 hours instead of 7..." Funny as hell,so funny I cried..after it hit home and realized I do the same thing....but at least we can laugh at our economically idiotic, ridiculously undertaken projects that we know ahead of time that if we just worked at McDonald's for the time we spent in labor,added with our materials costs,electricity to operate,machines to pay for the costs to buy then maintained, gas money for heater ,cars to drive for trips to buy misc. Things,so on and so forth,,,,,add it all up along with the 7.25$ an hr from McDonalds and you just made a plug that cost 175$.....and could have bought one for 4.75$....
And we loved every minute of it and would do it again ....and have many times over...as long as we ..just don't let the wifey read this comment ,we lovingly accept the added cost of the plug,and making it by hand and all that it entails
Otis similar to the quest I go on every time I search for American made items. Some people just don’t care, but some of us take pride in the fact that we, or someone we might know, made something that we use every day.
Yeah but if you just bought it from the dealer it would have been chinaluminesium and failed again, the same way it failed the first time. The bronze plug will outlive the rider, statistically speaking.
Do they not teach in schools anymore which side of the number the $ goes on?
@@stargazer7644 Your ignorance is showing. There are many places where the currency symbol goes after the number.
@@mikedavis7065 OK, I'll play. We'll ignore for the moment that we're talking about TOT who is American. Please enlighten me with some of the many countries that use '.' as their decimal point and '$' as their currency symbol and place it after the number.
Thanks now I'm heading over to Ebay to spend $300 on something I never knew existed before. But I can't imagine life without one now. 😯
ware can you find a rotary broach for $300 ?
@@fixitrightolson2110 I've seen a couple different wobble broach holders for sale on Ebay between $200 and $400 usd. I have no idea how good they are. Probably OK for hobbyists. Name brand start at $1000 as in sure you're aware.
There are things I learn about machining from this channel
That I could never get from a book or a teacher in a classroom
Like how to karate chop steel into perfect squares.
I fully expected the Mag pie sound effect again at the end, and was rewarded with a sly grin on my face. Another well done video, TOT!
The moment you said a broach can have any form, I thought you would introduce the heart shaped broach. At least you mentioned it, that really gave me the feel that someone is on the same wavelength with me... although it might be an invisible wavelength with no use. :P
Love your videos :)
An invisible wavelength with no use...
Cosmic microwave background, being in touch with the origin must be quite nice I think
There once was a man called Tony,
Who's channel I followed closely
He showed me his broach
in his youtube post
I wonder what next he'll show me
@O R Y X - A little yellow fish, somewhat leechlike, that goes in the ear. There it translates 'machinist' into whatever your own language is.
One never knows
But pay close attention
And skills will develop with project asention
Great video as always. Loved the split nut in the lathe trick. One for the ole memory bank.... Thanks Tony!
Indeed. Ought to work with plain old round things too, using a slotted tube to distribute the pressure from the chuck teeth so they don't leave indentations in softer materials.
My first reaction was: wow this is genius, I need one for those custom bolts I never make. Then I saw the price and thought, you know what, those M8 Allen bolts aren’t so bad after all!
Poly wash bottles (AKA squirt bottles) are wonderful not only around the lab, but also the home and shop. I have about a dozen of them and use them for 3 kinds of oil, plain water, soapy water, paint thinner, lacquer thinner, and acetone. You can dispense 1 drop or a stream. I like them because they are spill-resistant and work upright from full to empty.
Hey this old tony.
I love you, this old tony.
When you upload, this old tony,
I click right away, this old tony
You’re my adopted and only dad now, this old tony❤️
❤ you too!
Bet you say this to all the Tony’s... young or old.
S. White Haha. Never! I’m a faithful young man. Tony is my only papa😜
I am certain that new plug will improve your performance.
I've been waiting, hoping, and praying.
I can't begin to describe why i love this channel so much.
I am an engineer but I had never come across these, I learnt summat new today. Thanks.
When we used to run these on our swiss style screw machines we almost always ran these tools at 0.0004"/rev at 1000rpm
I'm a simple man, when I see a video about rotary broaching, I click on it.
Make sure you put a nice strong magnet inside the can so it stays on the machine.
It’s ingenious that someone figured this out in the first place. I always figured that these special hole shapes were somehow chiseled. 😱😂👍
5:28
People may not notice or appreciate the subtle details you do on your videos, but pay attention and you’ll see lots of creative ideas right in front of your eyes!
I still don’t know exactly what you do/did for a living before TH-cam but I think I’ve heard you saying something about programming. You have so many skills combined with your creativity that you could do advertising, 3D modeling, video production, movie production, movie directing, standup comedy, web designer, and the list goes on! You could even do well as a machinist!!!!
The effect of the text coming back with the tail stick is simply brilliant! Subtle things that add value to your videos!!!
That was a damn smooth Weeble reference.
The best editing on utube..... keep it up Tony!!
Tony, please do a video on making morse tapers. Angles, why do they need tangs, should i harden them,
etc. Thank you! Love your videos!
A #2MT machined on the shank of the rotary broach would allow it to be used on both the lathe and mill with obtainable adapters
@@tracylemme1375 That's assuming his mill is 2MT, and even if it is he could have a 3/4" 5C or ER collet already I'd rather leave that shank alone and make an adapter, just because...;
Peter Slutsky
, Good idea, and not too hard since he just made one. MT's with a tang are typically used on lathe tailstocks and drill presses, and are just jammed home. You need the tang to be able to drive them out with a wedge. MT's with a threaded hole in the end are meant for tools with a draw bar. In a pinch you can make up a short tang with treads that screws into the end of a draw bar MT to give it double duty.. I don't believe there's any reason to harden them for occasional use.
Adapters from 30 mill taper to 2mt are everywhere. A 3mt/2mt sleeve should be with every lathe with a 3mt tailstock quill.
The tang is used not only for removal but also to help drive the tool. The taper of a tool should never be hardened except with a nondriving tool ie live center. This allows the tapers to conform with each other.
Re. His next vid. There you go, he's got a 3/4" tool holder for that Bridgeport style taper shank.
Yes, lots of adapters available, and more you can make, I think I've got most of them . It's likely that you introduce some error that may or may not be important with everything you add between the quill and the tool, though.
Real question, not argument; how does a tang aid tool insertion?
Tony you’re the go to guy. Thanks for the videos. 😊
The race to the lathe... I'm dead. Laughed so hard the wife came to see what was the matter. Keep up the stellar work TOT!!
Great video as usual, you might want to keep an eye on the galvanic corrosion/electrolysis with bronze /brass with aluminum, I might not be an issue for this application but something to think about. Thanks keep up the good work!
I love learning this kind of content. Especially with your humorous stories and small comments. The premature video cuts also are... just perfect! Don’t stope making videos. I love this.
"An edge-of-your-seat thriller!"
"Magpies everywhere are talking about it!"
"Tony really outdid himself this time!"
"That Sharpie is soooo big!😍🥰😊)
Thanks, I watched another video where someone used one, and couldn't for the life of me figure out why it needed to spin. So, I looked it up, and watched the first video I saw, yours! You did a fantastic job of explaining it in layman's terms.
Ahhh the art of making tool and die funny and a great laugh no one but you can do that LOVE THAT. Keep up the great work
"It's spill-proof"
CHALLENGE ACCEPTED
They got some new-fangled gas taps in the physics lab. The teacher told me he was told that they were pupil proof after I'd dismantled it.
I hesitate to broach the subject, but making a Morse-tapered toolholder is a shankless Endeavour.
(With Triple Pun Score that's 97 points.)
TOT pops up when you holding the phone. I click in so fast, my finger cramps
I'm a 53 year old man and I just clapped my hands and said "oh boy!" when I saw the notice. But I'm still trying to understand how a rotating hex shaped cutter imparts the hex shape hole....I'll go have to go get some hex bits and tilt it a few deg and check it out!
@@hansangb Did your lights go out? I'm 56 and every time I clap my hands, something shuts off or turns on. Damndest thing.
@@hansangb Just so you know, I am really 56 and I meant no disrespect. :-) I am sure you get the reference! ;-)
@@jlucasound of course I do. And because I'm 53, I can appreciate humor. That made me laugh!
I can’t tell you how inspirational your videos are, and then I hit the shop and get frustrated that projects take me longer than 14:58 :-). Keep up the good work.
Took a while, but the penny finally dropped. The key is the offset in the mount, so the corners cut one at a time. Brilliant demo using the wiggling chisel. Best "Howzit do dat" I have seen in ages. Thanks! -- Subscribed
Hi Tony, where did you obtain the broaching kit, what make is it?
I was also thinking of making one but if I can obtain one at a reasonable price I would rather buy one. Great channel keep it up....
I always wondered how they cut hex holes! Never knew about broaches till date. Amazing explanation. You are a good teacher. And who made this video. Thanks to him/her also. Excellent editing, almost like those professional 6 figure salary movie editors.
A hard drive magnet in your new oil can will pull chips off your brush and keep it in place on any metal surface👍🏻
@@antrygrevok6440 what type of magnets do you think are used in hard drives??
@@antrygrevok6440 ....and the right oil........lol
Excellent. I never heard of a rotary broach and now I have a vague idea of how it works. Plus I thoroughly enjoyed the video. Another standard TOT video, in other words, wonderful!
This Old Tony, you rock. These videos are amazing. Thank you.
I will not have the sharpness of my chisels maligned, good sir! *kicks box top closed and under the work bench*
Shall I prepare the dueling handplanes sir?
Been machining 15 years, i never knew you could use a drift to remove the tools form a tailstock. always just wound the thing back lol.
*glances at bearing puller in hand, quickly hides it behind back* ....yyyyeah. Yeah! Me too!
Hi Tony. I hope you and your Family have a very Merry Christmas and a happy new year. I have a question. Can you use a Rotary Broach to make a Keyway? If you Milled just one Cutting Edge would that work? Thanks for making all these Videos. I have really learned a Lot from your Videos.😁👍👍
I bet you could! If it wasn't too deep / long. Though I'd probably make the square hole first, then bore the round one.
@@ThisOldTony ok, Thanks Tony.👍😁
I saw a video the other day of someone rotary broaching a 'D' shaped hole, so possibly...
Though Tony has the better solve with a broached square and then drilling.
But that might be awkward to get right if the center of the hole falls inside the broached hole. I imagine you'd have to take extra precautions of some sort to prevent the drill from lateral shift, since it would be contacting the side unevenly...
Your videos are much better than all of TV shows I have watched .
I maintain a fleet of model train locomotives for a museum. The Athearn brand have brass flywheels with hex drive shafts! I will be making my own real soon, thanks to you! OUTSTANDING!!
Nothing wrong with a can that's got a few hours on 'er
Depends is that rental, fleet use, or one owner?
4:20
Yeah, I don't have a lathe and even though I knew there was no way this was gonna work... I was kinda hoping you'd try it
I don't understand the geometry of this process. A hex shape gets fed into a spinning circle and the circle becomes a hex? How?
It's explained at 11:45
Me neither (even with the verbal explanation), hope to see it in action soon!
I am flummoxed!
If you look closely at the tip, you'll see that it's slightly concave like a shallow dish. That gives the points a relief when cutting, and makes them pointy-er. There is also a slight relief cut behind the edges on the hex shaft. If you notice, the cutting edge is slightly wider than the hex shaft's base. That allows clearance for the tool to come in at an angle so that only one of the points contacts the hole and cuts into the work a little. Then the tool and the work turn the same amount but because the tool is at an angle, the first point pulls out of the work and the second point rotates into the work and cuts a little on the second corner in the workpiece. This continues so that each rotation cuts a little out of each corner until you reach your desired depth. Then, FOR HEAVEN SAKES, PULL OUT BEFORE IT'S TOO LATE!! ;)
Anthony, Its a ROTARY broach.... Get it.....?
The tool engages the material ROTATING (Yeah?) in the lathe chuck jaws.
When it does that, It (the tool) also spins at the same speed. So they are synchronized and not moving in relation to each other, rotating at the same speed, in concert, in unison, etc.
Now the two are spinning together, the broach is pushed into and through the precisely sized hole already in the material, carving or forming a (in this case) hex shaped recess.
The reason the whole process is performed whilst rotating is to allow the broaching tool to wobble slightly off center, as Tony explains by 1º. This allows the broach to contact (and cut) only on 1 side at a time, during each revolution, this allows each broached channel to form incrementaly, drastically reducing the effort required.
See IKW's explanation within this comment section.
Either all that, or (and this is what I know to be real) Tony really is the Dark Lord and uses witch craft and trickery to accomplish his work.
you are very smart, very funny and very practical.. a rare combination indeed. I love your videos, such a wide range of topics... genius
The most suspenseful episode to date! Ive never seen a rotary broach! Mind blown by TOT. Again.
Trouble filming hexes consult a wiccan.
James Schrumm - excellent lololol
You ring?
A great machinist, an incredible video editor (person, not software) and a great sense of humor too.
When you used a Zip disk to cut the nut, did you use the 100 MB version or the 250 MB version?
I wonder how many people you're going to confuse with that statement. Too bad there's not a button for 'what?'. Then we'd have a counter for the youngins who have no idea what you're talking about. Thanks for the reminder of the good old days... ;)
@@Broadpaw_Fox If I can confuse only one person a day, it's been a good day. I occasionally take to our makerspace (public library) an old Zip disk still in the jewel case. On the reverse side of the liner notes I've written, "geek detector." That usually gets a laugh because the only people who pick it up already know what it is.
@@freddotu - oh, that's good. I like that one... geek detector. Well played - I'd laugh at that and smile, just like I am now. Thanks!
Is that one of those newfangled things the kids are sticking in their Bernoulli Boxes these days?
I was legit sitting here wondering just that.
How does Tony broach- at night?
With his hands.
Learning and Laughing at the same time. I LOVE watching your videos, Tony! Thanks, man!
Another great video TOT, your wit is amazing. Honestly, I feel so lucky that I get to watch your stuff. Thanks for making me smile and laugh every time!
Nice marker shenanigans😂😂
2:49
anyone else wish they could subscribe a hundred times because this old tony is so special?
Yes
@5:00 firing shots at Solid-Tool-Post-ers, made me laugh hard.
I busted out laughing so hard when I saw that, then the .1" depth of cut popped up and that slayed me lmao. I aught to make a little video like that showing our Monarch at work, we can take 1/2" cuts with that beast. It's weird hearing chips hit the ground that sound like solid chunks of steel lol, they have that "ting" sound you only get with thick and hard pieces of steel.
1minute in and I give a BIG thumbs up for cinematography and music! Drama... and humor...
The dry humor is just genius. As a machine shop owner, the rest of the video is fun to watch as well.