Adam Savage's Guide to Drill Bits!
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- เผยแพร่เมื่อ 14 พ.ค. 2024
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Adam dives and drives deep into the world of drill bits, giving us an overview into the various kinds of bits and end mills he uses in his workshop and showing the versatility of his favorite bit of all: the venerable forstner bit! Plus, a peek into one of his early mechanical builds that he constructed using only forstner bits!
14-piece forstner bit set: amzn.to/3xShjb4
Shot and edited by Norman Chan
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#AdamSavage #FavoriteTools #DrillBits - วิทยาศาสตร์และเทคโนโลยี
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hi Adam, " really enjoy the videos
learning a lot ", :)
Funny enough just last week the neighbour was trying to put screws in , she was using a large drill bit to make the holes but the screws weren’t going In correctly, so I used my own drill with smaller drill bits (with a reverse function) and they went in no problem.
@@lasarith2 that was a good idea, might have to remember that, :)
How do I gift this to my nephew?
This was an awesome and highly informative video thank you so much for posting! 😊
I love everything about this, even the boring bits....
No.
LOL, I see what you did there.....
Damn that was clever! Very good!
*slow clap*
Nice one
Born Benjamin Forstner was born in 1834 Beaver County, Pennsylvania, He was a gunsmith and inventor, and he died a rich man in Oregon at age 62.
en.wikipedia.org/wiki/Benjamin_Forstner
"The more you know"
Benjamin Forstner was indeed born in Pennsylvania and migrated to Salem, Ore. at the end of the Civil War. By trade, he was a gunsmith. Boring and rifling gun barrels, he came up with a bit design (patented in 1874) that still carries his name. Forstner used the leading factories in New England to commercially produce his invention. One was the Colt Patent Fire Arms Co. of Hartford, CT.
If you have a 1 1/2" Forstner bit, you can turn almost anything into a tea light holder.
Ok will do
Forstner bit is best bit.
My mom's antique cherry coffee table doesn't know what's coming!
@@alexhb12333 Don't you mean your mother's antique cherry coffee table *with tea light holders*??
Great for impromptu trepanning aswell
I never realised he has a ruler tattooed on his forearm, that's amazing.
Probably the most useful tattoo to exist. I kind of want one for myself.
@@Greenhelix5 Unfortunately it'll lose its accuracy as the person ages. :)
@@SlartiMarvinbartfast it's fantastic for estimation, it's would have lost a bit of accuracy as soon as it healed, but being able to check quickly if something is around about X size is invaluable.
I so wanna ask him about that, surely it becomes less accurate over time?
@@ThistleThings It's never going to be very accurate, it's mostly useful for coarse measurements like how he uses it to check whether the bit is 2.5 or 3 inch. A few mm of sag over the years isn't going to make that much difference for measurements like that.
ADAM SAVAGE: Talks about drill bits
ME, FOR 15 MINUTES, INCREASINGLY ANXIOUS: I know you're building up to your forstners give me the f o r s t n e r s
aaaand there she blows!!!! lolz
Forstners... for fastening. Or for forcing. Idk language. Better than a hole saw. Yay😁
25 minutes of talking about drill bits... okay, I'm in.
. . . this guy needs a drill bits TV show.
Well if he‘s in, i‘m in
If Adam get's excited enough about a thing to make a video on it I'm in, he could do a 25 min vid on his favourite woodworking pencils and I'd watch.
i would recommend AvE's video on drill bits and metal drilling tips
U are right
My wife laughed at me several months back when I was talking about my Forstner Bits and I called them my favorite drill bit.
😁
divorce is always an option (just kidding)
...does she laugh when you use your peter bit... uhhh bilt?
You discuss your forstner bits with your wife? You are a legend!
Drill bits are inverted pencil sharpeners
"Strike that. Reverse it." ~Willie Wonka
Everted
Didn't know that word ! I'll go to bed a little less stupid :D
Sir that’s illegal
I just got a handyman’s apprentice job and this felt like I got a weeks learning in a single video. Thanks for being so good for my mind as a kid, and thank you even more for keeping it going Adam!
In addition to Forstner bits, my favorite woodworking addition was a pilot bit with a collar that makes a countersink at the same time. Saves a lot of time when screwing together a bunch of 2x4's.
Yes.... I use those all the time.
Bloody good little tool that, drills and countersinks at the same time, and some have a skirt that you can set to give yo a certain size countersink too
Yup, I keep meaning to get them, have normal countersinks but it's nice to have things turn out nice.
a 2x4? you don't need to drill a counter sink for that. Standard construction screws will countersink themselves without splitting framing lumber. At least doug fir where I am.
@@HotForgeChaos just started setting my garage last week with french cleat shelves.
Picked up a couple they work so nice.
Im working with pine and i have counter sinks hole that a little to deep. Its really easy to do.
I physically shuddered as soon as you said "I was drilling into a piece like this" at 19:06 ...
Benjamin Forstner (25 March 1834 - 27 February 1897), was an American gunsmith, inventor, and dry goods merchant. In 1886, Forstner patented the Forstner bit. The bit was revolutionary as it did not feature the lead screw (which Forstner called the "gimlet-point") or the cutting lips of more conventional wood boring bits, and thus proved especially useful to gunsmiths and high-end woodworkers.
The spade bit is most commonly used in construction to drill fast rough holes through studs and joists for routing wires and tubing. It blows through the soft would very fast, and you don't care how clean the holes is just for routing.
I could listen for hours to Adam describing his failed projects and mistakes. I often underappreciated that the many failed projects I have were an invaluable learning experience. Hearing Adam talk about his own mess ups reminds me that I'm in good company.
Forstner bitts changed my life! the attribute you didn't make much of, but was shown is the shape of the bottom of the hole. The center has a small divot and the outside edge has a small groove, but the rest is flat and smooth. This was GREAT news for me because I imbed T-Nuts in resin castings. With just a pick and a little sandpaper, I can get a very clean hole that centers and levels the T-Nut - something that the great honking divot and grooves of a spade bit made difficult.
This is what I bought my set - wanted to countersink bolts and nuts for some planters, so forstner made that easy. Honestly didn't know I was buying something so special, but I love the bits.
!!!!!
Adam Savage is just the best. I would love to work for him.
So, Adam - new gimble camera mount as a One Day Build when?
I second this. I want to see it done right. I have friend who kicks around with filmmaking and I think I would be cool to surprise him with a little steadicam rig
When he was looking at it at the end, you could tell he wants to redo it properly!
Would be great to see him make 2. One of them being a "here's what I originally attempted, just with better tools and knowledge"
The other could be more of an example for beginner makers and cinematographers who (like young Adam) don't have access to a full shop.
Good idea.
I am enthusiastically, intensely, here for that as well.
Old-timey augur bits, like the one Adam shows, potentially cut the cleanest holes in wood. They have two spurs around the edge that cut the wood fibres in advance of scraping the material out.
It was bugging me that he did not mention the spurs or the pilot screw that pulls the bit. Love my bit n brace setup.
I absolutely love this video!! It’s almost like getting a one-on-one lesson from Adam Savage. I would love to see more deep dives like this!!
Hey Adam doubt you’ll see this but I hope to let you know that you and Jamie both had an incredible impact in my childhood and I can’t thank you both enough for igniting that spark of passion I have for learning how the world works around me
Thanks Adam for your insight and experiences in this subject! I love your direction or lack thereof while you explain. It feels like I'm listening to a friend share their knowledge with me. I truly enjoy these videos.
Something I loved about having had wood and metal shop in school was getting to work with several types of drill bits. Our final project in wood shop was the little race cars powered by a CO2 cartridge And we used a forstner bit to drill the cavity for the cylinder
Exactly, shop class is invaluable. I too did the CO2 cars in shop class. In junior high, no less. High school seniors are barely allowed to look at pictures of power tools nowadays.
Which is very likely why it perplexed me very much to hear Adam say Forstner bits are obscure. Less well known than spade bits, sure, but nowhere near qualifying for a Buzzfeed clickbait list.
It amazes me that somebody with Adam's experience and knowledge would ever think "I'll just drill into this piece while I hold it in the palm of my other hand."
It's not that big a deal.
Even experienced people can have a brain fart and do something really stupid.
Adam has learned a lot of bad habits by being under unrealistic time constraints. Do as he says, not as he does. Clamp work. It is worth the extra moment for the control and safety that clamping work offers. Adam had a bench vise right next to him. Would he think to use it? Of course not.
I am always glad to see you Adam. It is just great to sit and listen to you and your experiences. Thank you.
Nothing I love better than these videos about tools. I already purchased several after watching them. A big thank you...we love you Adam!!!
I'd love an addition to this video covering core drills, drill bushings, and reamers for precision
I've been discovering the shortcomings of my various tools by making mistakes and was recently considering if that Forstner bit set would've saved me some headaches. Thank you Adam, for confirming my suspicions about them as well as the step bits I've been considering. And thank you for providing such informative and engaging content. It's difficult to do both when discussing tools.
Step bits are great for very specific things. People get in trouble with them by using them as an every-job bit. I see that all the time.
Most practical tattoo I saw in my life.
I had to watch this. Adam and 25minute video on drill bits. I mean obviously I'm going to watch it! I love watching people go on about what excites them!
I recently upgraded my cheap forstner bits with an expensive set with a hex shank (instead of round), total game changer in my wood working.
Which brand? Fisch?
@@zorbaseatery4745 MLCS it is a wood working store in the US.
I always hated that companies use smooth shanks for forstner bits, especially large diameters where you'll be hogging a lot of material.
@@fatfredthe28th would it be possible to grind down three flat sides on a belt sander, maybe create a groove on those sides, so a standard chuck can get a better grip on the shank?
@@zorbaseatery4745 , of course. Just makes more sense to me to sell them with a hex shank as they will work better and presumably sell better. Who knows, maybe manufacturing costs are notably higher versus smooth shanks.
Project farm has a video testing step bits. He definitely found a difference between bits.
He does real testing, not anecdotal guess work.
@@videodistro To be fair, lab testing a tool, vs real world use can have variance. The most common failure in use is overheating the bits. People throw them in a drill at one speed and go from a 1/8 to 3/4, over speeding the bit. Also the walk the bit around trying to get it to cut faster. Both of these will dull a nice bit or a cheap bit just as easily.
@@ionstorm66 True which is why he repeats the same tests on each type so their strengyhs or weaknesses are exposed at least at THAT usage whereas they might perform different at a different speed but that would be a different test.
I love how my workbench surface looks exactly like yours.
Just one of the hundreds of things I love about his videos his he’s willing to share his mistakes and teach us what to do and what not to do
The flat bottom of a Forstner bit is unmatched by any other bit that I know of.
Center cutting end mills are even flatter. But you kind of need a machine to use those. There's also some router bits that are for making flat bottoms. People use them to level CNC spoil boards.
These do a really nice job and cut much easier. Wood Owl OverDrive Fast Boring Ultra Smooth Auger Brad Point Boring Bits
@@1pcfred Your right about end mills, they don't go as big as forester bits though (at least not on a normal person budget, and then you need a tool with a massive chuck to use it). Spoilboard bits however normally don't plunge cut, they are meant to sweep in from the side and that a layer of material off and wont cut if you push them straight down.
Annular Cutters, another one of Adam’s faves. They are the metal version of forstner bits. Extremely accurate hole diameters, and they have no problem cutting holes that aren’t surrounded by material, which allows you to make accurate radii in parts.
Those flat bottomed forstner bits make the world go round
One important thing you left out about that auger is that the little screw-threaded tip (sometimes called the snail) draws the bit through the work. This means you don't have to apply any force in the direction of the bore, you just need to turn the brace. Longer throw braces (they go up to 14 inches AFAIK) make this really easy even in very hard woods.
All this time I thought I was the only one that struggled to drill a good hole. This video validated my frustrations and showed me that a simple hole is harder to make than I thought. Thanks for the great video, Adam!
I will be eternally grateful for being told about forstner bits, thanks Adam..
The timing on this video is incredible. I bought my first forstner bit a week ago for installing a one sided deadbolt. It's maybe the best and only bit for flat bottom holes.
Best, yes. Only? Spade works but you really need to use them in a press to be accurate, they're more of a first fit joinery option IM(limited)E
15:28.
I freaking love the Adam used the ruler tattoo on his arm! The tattoo isn't just a tattoo, it's a tool
It's a tattool.
This video is actionable proof that I can sit down and listen to Adam talk for 25 minutes without really covering much I wasn't already aware of (not to be proud or anything, I've just been lucky to grow up around tools). Keep up the work, y'all
I just recently bought a set with a variety of unfamiliar bits, and this answered several questions I had. Thanks, Adam!
Man, those Forstner bits cut beautifully.
As someone who's never used a drill, but is about to have home repair projects for the first time ...like running ethernet, videos like this are just what I'm looking for!
Pro tip see if you can find good deals on CAT5 wire at lows. Works as ethernet and can be stretched super long distances
If you are running cable up and down a wall, then a very good thing to learn about is fish tape, and fishing a wall.
@@jamestaloopo2630 I'd personally go with CAT6. Bit more expensive but it's WAY less expensive to wire it for CAT6 now than rewiring it in the future of you want higher speeds or stuff like PoE
@@jamestaloopo2630 We'll probably do CAT6 in the walls from Monoprice or something.
I never had anyone explained that simpler to the point and very informative.
needless to say Subsribed.
Yes indeed! I am right there with you on those forstner bits! I have an inexpensive set I got from Lowes, and they are great! I mostly use them in my drill press, and I love 'em!
I’ve been doing a lot more hand tool woodwork recently, so when he mentioned auger bits my ears perked. Surprised he didn’t mention the snail at the tip of the bit, it is just a fantastic lil idea that works soo well
Me too! Auger bits are boss for lower speed drilling, and the spurs leave a nice finish across the grain. If you use a brace you can relatively accurately get depths by counting turns. And the old ones aren't that expensive online or from the right thrift store/antique mall. I think they just don't fit into Adam's main style of work as well as Forstners do (metal machine shop, quick drill chucking, lots of different materials, larger holes, etc.).
That snail looks like the speed tip Bosch stick on their spade bits, I take it it's the same thing? Albeit it probably doesnt then tear right through whatever you are drilling!
I just watched Adam talk about his tool and bits for 25 minutes.
I totally get your love for the forstner bits. I bought my first a couple of years ago to drill holes for fittings I had made from steel pipe ends that needed to be fitted into oak furniture I was building. It turned a job I was struggling with into something truly enjoyable. I agree with the cheap ones being fine, I have a set and none get used regularly but its great to have all the sizes available. I find the lower priced ones perform just as well, where they lack is in durability. I got a bit more expensive one in a size I use all the time. they are also great for fitting hinges.
I recently bought my very first cordless drill.
This is just a perfect review of the different types of drill bits.
Linemen use the auger bits to drill mounting holes for transformers in wood poles. Either in hydraulic or electric drills
Best tool for drilling studs/joists for running cables or pipework too. Auger bit in a decently powerful corded drill will do the job in half the time it would take with a spade bit in a rattle gun, and no messing about with batteries.
From Wikipedia: Benjamin Forstner (25 March 1834 - 27 February 1897), was an American gunsmith, inventor, and dry goods merchant. In 1886, Forstner patented the Forstner bit. The bit was revolutionary as it did not feature the lead screw (which Forstner called the "gimlet-point") or the cutting lips of more conventional wood boring bits, and thus proved especially useful to gunsmiths and high-end woodworkers. The bit was unsurpassed in drilling a smooth-sided hole with a flat bottom. It was also better than Russell Jennings twist bits for boring at an angle and not following the grain of the wood.
Forstner eventually made arrangements for the manufacturing and sale of his bit with two Connecticut firms: Colt's Manufacturing Company of Hartford, and Bridgeport Gun Implement Company, successors to Union Metallic Cartridge Company. The Forstner bit continues to be manufactured, although it has evolved into a split-ring design. Also, modern Forstner bits normally feature a (non-screw) lead point (AKA "center spur"), unlike Forstner's original, although rim-guided bits are still available from some manufacturers.
Thanks for that information, I had never thought to look up the origin of Forster bits.
Wikipedia
I surprisingly discovered these on my own, but this video reinforces how much I love them
Adam, you truly are a mentor to many makers. Keep fighting the good fight Sir Knight!
i've always said... buy the cheapest you can...for stuff you hardly use... but stuff you use all the time, buy the most expensive you can afford.
This is why I have $3 wrenches and $60 wire cutters... a $9 studfinder and a $700 multimeter.
Quality's all well and good, but you could buy a running used car PLUS a decent multimeter for that $700. Or 5 or 10 really great multimeters. You might have a spending problem there (or a research problem)...
Well... I know these professional builders that were really succesful, and appreciated for both prices and quality at the same time. They once told me they bought the cheapest brand of cement blenders in bulk, and threw them away after each project instead of cleaning them, because that would cost them more time and money than it was worth cleaning them... I think that goes for a lot of things in our society today. To use and discard is actually cheaper than buying quality and maintaning it.
Please do a remake of the Camera-Stabilizer (possibly plus a vest or sth. to take the weight of your hand).
Great Video!
I actually just bought a set of forestner bits a week ago and I LOVE THEM!
Brad point bits are my second favorite bits for precision work. PREACH !!
I can literally listen to Adam talk about anything he’s interested in. I love it!
3:08 The Toolshed's version of a MAC-10, i love it! haha
Re: 15:30 how often do you need to recalibrate your arm?
Never. The length of his forearm is a constant one cubit.
Whatever you do, don’t gain or lose weight. Can’t afford to stretch the tattoo
Wait, is his forearm calibrated flexed or relaxed?
No need for calibration, when only used for approximations, like he does. A great practical gimmick.
If I were a maker, I'd probably get one, even though tattoos isn't really my thing.
@@soul0360 I don't like them either but this one actually I do want.
Over the years as a DIY homeowner I've had to approach a lot of projects requiring drilling. Early on my wife needed holes in the bottom of her planters. Plastics not a problem there you go! But eventually and she did bring me a ceramic planter??? It required a glass drill bit. And later trying to organize all of my Woodworking magazines in a 3 ring binder I required a paper punch drill bit. And when I installed hinges on my gates I needed a hinge drill bit. Coinciding with the gate build I had to drill a 3/4" hole into concrete with a masonry bit. I also had to use a step drill bit to modify a light fixture I was putting up. And of course while I was building my deck I used an 1-1/2" forstner drill bit to recess the hole so that the flat washer lock washer and nut could reach the bolt coming from the other side.
Alongside the other drill bits Adam talked about that's a lot of specialty used drill bits.
Who'd a thunk? Thanks for putting this up Adam!
Adam teaches as well as entertains , brilliant video , thank you Adam .
For anyone else who has never read the manual for a DeWalt keyless chuck like Adam is using, they are designed to lock only once you rotate them slightly backwards. So turn the chuck clockwise until it seems fully tight, then rotate it backwards a couple of degrees and you will feel a click as it locks. A spinning drill bit will no longer cause the chuck to unlock and the bit to fly out.
Adam you forgot about hole saws - the most underrated drill bit :(
He did a separate video a while back about annular cutters, which are very cool.
Your explanations on how you work is amazing. Thank you for being!!!👍🎸
Never knew that Adam talking about drill bits for half an hour was something I needed so mucn
Adam think you should start watching Project Farm. He has tested a lot of different products that you use. Like drill bits, tools, glues, and other everyday problem solving products
Hey Adam, I do a lot of work with electricians and the spade bit you mentioned does make a mess but its great at drilling a lot of holes quick, which comes in handy!
The good ones have a threaded "point" to them, to help pull the spade into the cut.
I don't like the threaded tips because they pull into the material and can act as a wedge splitting it instead of drilling all the way through.
Edge drilling with the Forstner bit.....blew my freaking mind. Interesting application for woodworking for sure. Great idea!!!
Forstner bits have been my favorite since I had to stand on a stool to use my dads band saw. When I was growing up my dad showed me how you could use forstner bits to hollow out a block of wood in the shape of a boat such that it would float like the real thing. A far cry from hammering at a block with a chisel for hours on hours. Thank you for sharing that wisdom with everyone else!
In woodworking, the thing I've seen most people just not have any awareness of is the process of milling lumber. People seem quite significantly keyed in to the home depot, dimensional lumber process, more than the raw sawmill lumber style that hardwoods are more typically found in.
I'd say that's understandable, given that "raw" boards just aren't as casually available as the "cleaned up" pine that normally gets used for home improvement stuff.
It's because the cost of getting into milling lumber is substantial. A quality planner and jointer runs on 220v which most homes are not prewired for. Depending on the location of your panel, running the wire is expensive. Additionally, you panel may not support any extra load. As you can see, the cost can quickly run away from what most DIYers can afford.
@@AxGryndr The home gamer stuff is all 110v 15a compatible. Hardly high end stuff, but it exists and it works for low frequency usage.
@@RadicalEdwardStudios You are right, you can get a lunch box planner, like a Dewalt 733/4, that runs on 110v however they present a number of issues (snipe, underpowered, limited capacity, slow feed rate, etc). For someone that is running that small of amount of board feet, the price tag of the planner usually is fairly high compared to the cost of paying for S4S lumber at a big box store.
@@AxGryndr There isn't always sufficient selection at box stores. That's the main reason people haven't given up on hardwood suppliers.
As an apprentice electrician, I _live_ by the spade bit. I hate them, they're messy, but they're fast!
And the holes you drill don't need to be precise or neat, just good enough to run the wire through.
For roughing you can't beat a spade bit. We use them as plumb bobs too. Tie one to a string and bob's your uncle.
They're also sacrificial when you hit a nail.
@@danielstickney2400 that depends. If you catch it early enough you can get the nail with the electrician's trusty chisel, AKA the flat head screwdriver.
One of the best (if not the best) introductions to drill bits I've encountered on YT.
Even I already knew most of it, I still enjoyed You, Adam, talking about drill bits 😃😁 definitely an informative video 👍
Don't we need a "Drilled Into Own Hand" demerit badge? 😁
To sit beside the ‘’Stapled Own Hand” that too many of us have also earned…
The predecessor to the spade bit (and auger bit) would more likely be the centre bit (the kind used in a brace)
They make a much nicer hole. I inherited a few from my grandfather.
Hey Adam, I don't know if you'll ever read this, but I just wanted to say that you inspire me on all levels to be a better human. Your hard work, your attention to detail, your kindness, your patience, the reverence you have for creation and creativity, and your messaging about the power of the responsible application of science to enrich our lives, I've been giving it some thought and if everyone were like you, the world might be full of corny jokes and landfills filled to the brim with dorky trinkets, but the world would be prosperous, generous, beautiful, and at peace. My captain; my king!
Need a part 2 with some of the more exotic ones. Lovely video. Thanks!
@15:32 - that moment when I realized his tattoo is a ruler.
"It might be peculiar to have a favorite drill bit"
Nah, Forstner bits are my favorite too
I knew right away it'd be forstners, I've never even used them and they're my favorite.
that's because we all know what's what
Your little bit of understanding...is my encyclopedia...thank you!
My dad was a machinist for most of his life. He introduced me to forstner bits. They really are amazing things.
"deep *drive" ahaaa
I see what you did there :p
I was wanting to get a step-drill the other day for making holes, but a pretty basic one was like 30-40$ here in a local store.. surprisingly expensive, when an entire set from 1-14mm can be as cheap as 10-15$
the first drill you were holding would likely be a chisel point twist drill
It depends on the grind whether a twist drill has a chisel point, or not. You can split the points on twist drills and then they do not have a chisel. So just call them twist drills. Because that's what they are.
Is jobber not the term he was looking for
Love Foresters man, so great, clean, and accurate! That gimbal is a work of art Adam, love it!!
15:26 - I never knew Adam had a ruler tattooed on his forearm lol that’s awesome on so many levels! Someone like him would so have that tattoo!
I've been machining quite a while and had never seen nor heard of a Forstner drill. I'm going to add some to my box!
I was hoping you'd talk a bit about TX drills too, I've been a huge fan of those lately.
Love you Adam. It's this kind of stuff that makes you my hero.
Already knew all this stuff but somehow still sat through the entire 25-minute video. Adam has a knack for making just about anything interesting.
I've found freud forstner bits to be the best lower cost option. Also, learn how to sharpen your forstner bits you'll get years of life out of them.
thats goes for any cutting tool
"That thing that I just did? Don't ever do that."
Do as I say not as I do
Thank you so much for making these and giving us so much amazing knowledge!! I am learning all about making from you and loving the videos.
thank you for doing the good work of introducing more people to forstner bits. :)
i'm also a fan of both fixed and adjustable hole saws in certain situations (obv not all situations, but it's an easy way to make little wooden wheels with perfectly centered holes).
Adam, you didn’t mention the other awesome thing about Forstener bits…maybe because it’s too obvious?
Flat. Bottom. Holes.
I myself only learned about these bits because I needed to make counterbores in a wood project, and had no idea what tool I was looking for. Luckily, the fellow at HD did, and I can now say that I have seen the light.
Thought you were going to say split point and then Jobber. Nice review.
Fascinating. I've done a bit with drills now and then. Just minor house work and had no idea what the difference between all the bits was. Thankyou.
I have to thank you. I had been suffering from insomnia, but thanks to this video I was able to get 25 minutes of uninterrupted sleep.
'Real' Forstner bits don't have saw teeth, they have a smooth rim with just the two chip removal slots. You can also drill holes at an angle with a 'real' Forstner bit without the center spur touching the wood, the smooth rim is enough to guide the bit accurately. There are cheap & nasty Forstner bits made from some ferrous material (I won't dignify it by calling it steel) and for a few dollars more there are High Speed Steel (HSS) Forstner bits which are really better value, at least up to 1/2" or 3/4" because those small sizes are more likely to 'smoke' - overheat - and HSS isn't affected by anything much short of a welding torch. There are a bunch of 'Forstner-like' bits out there with 4 or so carbide teeth, usually sold for lock or Euro hinge installation that work OK, but they don't do the angled hole thing or self guide.
Yes, there are crappy Forstner-bits made from rather soft "steel" which dull and burn out fast, then there are good HSS-versions. Its not easy to figure out which is which and price is not always a reiliable indicator.
I got myself a set where the cutting surfaces are made out of brazed-in tungsten-carbide. Got them direct from China and they are a real joy to use for pretty much the same price you'd pay for a cheap set in a shop.
They run cool, even in hardwood and I even used them for the occasional hole in thin aluminium-plate before I got a proper set of HSS-holesaws.
Best thing, you are sure, they'll cut while you'll never know until yout try out ones out of plain/HSS steel
Angled holes are very few to drill in my shop, If I have to, I start them flat and gradually increase the angle and that works fine.
FINALLY, a tattoo worth having, LOL.
I love forstner bits, also my favorite drill bit! I do also have a whole drawer full of oldschool auger bits and twists for the old hand drills.
Gonna be picking up a set of Forstners now! Thanks for introducing me to these, Adam!