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Andrew Martin
เข้าร่วมเมื่อ 23 มี.ค. 2012
Hand-Sharpened Drill Bit
I've previously posted sharpening a twist drill by hand.
th-cam.com/video/wStrlkuwMYc/w-d-xo.html
I do this routinely because it is quick and easy. Here's a video of using a hand sharpened 1/2" twist drill to drill through some 3/8" steel plate.
The drill isn't sharpened precisely, so each of the two curls are different size however it works and is efficient. It takes about two to three minutes to sharpen a drill depending on how dull it is. A broken drill will take several minutes and may need to be heat treated.
th-cam.com/video/wStrlkuwMYc/w-d-xo.html
I do this routinely because it is quick and easy. Here's a video of using a hand sharpened 1/2" twist drill to drill through some 3/8" steel plate.
The drill isn't sharpened precisely, so each of the two curls are different size however it works and is efficient. It takes about two to three minutes to sharpen a drill depending on how dull it is. A broken drill will take several minutes and may need to be heat treated.
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😋
If you put a piece of perspex on the outside of the glass, the glass would probably still have broken but stayed in place and allowed you to show a final result. And use normal thick glass ie 6mm or 8mm , not tempered glass that shatters into a million bits
Thanks! Nice idea. not sure whether the plastic would bubble and obscure the view before the glass broke but it is certainly worth a try. Plain glass broke quickly for me, just as soon as the molten metal touched it. Most of my glass was from old halogen work lights.
it's so awesome to see your video!
Thanks very much for the comment!
What fuel do you use to light up your furnace
I have a propane port in the side of my burner As you know the furnace has to be hot to burn waste oil.
What size excavator are you using
I think that's an E35. It is a local contractor's machine.
jesus christ, 2024 still using imperial 🙄🤦♂ Useless video.
😂😂😂
Thanks for the enlightenment. Would my work be better if I learned the metric system? But I'm not Jesus Christ. I'm quite mortal though it may not seem that way to you.
@@andrewmartin4258 it would become usefull for the rest of the world, conversions would be much easier and you would not need fractions.
@@pedgarage I am very comfortable with fractions. In some cases fractions make the calculations much easier. I am a degreed engineer and am very familiar with the metric system. I prefer to use the English system. Your initial comment was quite derogatory however, and unwarranted. I regret that you learned nothing from the video because you were hung up on the units. The units are insignificant when it comes to understanding the basics of the physics.
That thing is sweet
Hallo very nice furnace 👍👍👍 what kind of refractory is used in the lid? And what kind of bricks are in the furnace wich face the burner flame?
Thanks for the kind words! The lid (or arch in furnace terminology) consists of a sheet metal ring with a 1/2" lip turned inward. I used 2,600 degree brick. Melting cast iron is tough on it but I have yet to replace any brick after 485 melts. Here's a link to a description of the build: forums.thehomefoundry.org/index.php?threads/simple-brick-furnace.288/
@@andrewmartin4258 485 melts wow that is great 👍👍👍 excelent furnace. Thank you for sharing your experience 🙏 I try now to build a new oil iron melting furnace with mullit fiber boards in the arch and brics with mulit fiber blankets for the furnace walls. I dont now how that will stand to 1600°C. Wish you always sucsess with yor furnace and casting work💪💪💪
Keep your eyes on the road….not the hula girl 😊
Thanks for the reminder, Russ!
If I were a guy with your knowledge, I would have an excel spreadsheet that would calculate all this out for you and sell it for a few dollars each copy. This is great stuff and I would be your first customer. Looking for an easy way to determine size of sprue, runner, expanders etc.
It is explained in the videos. The spreadsheet I use is incredibly simple however you have to understand the basics because each mold is so different. It is really not difficult.
Exelente 🔥🔥👌🏻🙏
Thank you!
It blew up because of the uneven temperature distribution or because of the pressure buildup in the middle chamber?
Uneven temperature distribution. The sand is quite porous preventing pressure buildup. Notice the air in the cavity was expelled with very little force.
Disculpe maestro una pregunta como se llama ese sistema de vaciado por piscina de rebozo
I regret the translation of your comment is not easy for me to understand. The pouring basin is the design shared by Olfoundryman. Martin (his first name, no relation to me) really knows his stuff and has helped me tremendously. You can rely on anything and everything he says.
@@andrewmartin4258 Excuse me, teacher, but I wanted to know what that emptying system is called, the rebozo pool.
@@heilerdelarosa It is a pouring basin with a foam plug.
VERY cool. Helps shape my mental model of how the aluminum flows. Thanks for going to the trouble of setting this up
Thanks for the kind comment! It was all selfishness. I had to video the fluid metal in order to review it multiple times as well as slow it down. Putting it on TH-cam is an easy way to save it and find it later. And sometimes it helps other people. ☺
I jumped when the glass blew
Me too! Every time. This was filmed inside a box of old windows to contain the debris. My first one was out in the open and I was surprised my camera wasn't damaged by hot metal. It is nerve wracking even knowing it is coming.
😍
😂😂
So cool man ❤
And hot... Thanks for commenting.
Very instructive video, thank you. But please, what is the "plug" that holds the metal (mark 1) 1/22... right at the beginning of the pour? Thank you
Styrofoam. In my case it is the pink foam board I use for lost foam casting as well. Not only does it allow a short pause before metal begins flowing down the sprue to insure there is a stable liquid level in the pouring cup, it flushes air from the mold with the vaporized foam. It think the foam also reacts with oxygen when it is hot thereby also reducing the potential for aluminum contact with oxygen. Thanks for commenting.
@@andrewmartin4258 Many thanks. I do a little foundry work for fun... And it takes a long time to learn. But this is the 1st time I've understood that casting has to be slow, regular. No air pockets. And the little "plug/styrofoam" allows preliminary filling of the casting cavity, absorbing oxygen as it burns. It's fabulous, magical! And nature adds a skin around the liquid, a skin that you have to learn not to tear. No book explains this! It's one of my best foundry lessons! (note: I practice steam modelling, so I rather cast brass, bronze (from salvage)MERCI CHER MONSIEUR!
@@cccbbb3161 Slow and uniform (regular) but as fast as is practical to maintain control. 😂 Steam modeling is very cool! I doubt there's as much value with using foam in brass or bronze casting but there might be some. Merci, mon ami
Thank you! This was worth a thousand words!
Thanks for your kind words!
Did you design these ways or had they been used by foundries historically? Good quality fill.
Thanks for your kind comments! I've been trying to learn and improve my castings. Using the glass flask with video has helped me see where what I'm doing can be improved. This was basically to compare a curved sprue with what people normally do. The curved sprue avoids mixing with air and the foam plug pushes a non-oxygen contained slug of vapor in front of the metal front. Liquid aluminum is very susceptible to oxygen.
good show
Thanks!
Well done! Did You ever try to cast something with a long, thin, blind core?
Thank you! For me, this is a long, thin core. Getting the sand out of a blind core could be a challenge. And no, I've not tried. You're supposed to mix your core so the heat of casting then the shrinkage after casting pulverizes the core. I have never been able to get that to happen.
I took the AM drill sharpening class. Amazing. I think I need a refresher though.
Classes start soon...
I will take both of them but I prefer the Super Sport what a American Beast
I'm not tired of it yet. I'll be sad, but when do you want to come get it?
Oh and here’s the Chevelle. 🤗
Don't even think about touching it...
I was going to send you this video and say “Hey this reminds me of you and I in the Chevelle” then I looked at who posted it. Good weather for a ride on the show truck. Great memories.
I'll post some pictures.
Epic video short
Thank you. Hershey, the brown dog, died last year. A great friend.
Bored? No are you bored? Are you? No i am getting bored? Why would i get bored? 😂😂
🤣🤣
Is the mask really required?
There might be some debate on that.🤣 It's an old video.
Them wheels look bad on the 37
Thanks for the kind words! It's an old street rod, still in great shape. Those were custom wheels designed and built for this car. I've had the car over ten years and like it as much as the day I bought it. It is fast and smooth. We've had it on several trips of over 1,000 miles including to Colorado and over Independence Pass. Others think they don't match current style. Styles change.
I'll take the SS please.
Thank you! I'll put your name on the list. You'd have to promise to drive it. th-cam.com/users/shortsTaz3CZJP2eg?feature=share
Mine they used a truck mount crane to set mine in the hole after I tared it inside and out
The issue here was carrying it down a slope and around the house to get it in place. Thanks for commenting!
@andrewmartin4258 wow mine was flat ground in a big back yard
What are the advantages?
The entire house is within an insulated envelope. It is a high R value and limits air infiltration. More expensive than fiberglass batts but there is a payback. The attic spaces stay moderate temperature. Disadvantages are cost, you really can't do it yourself, and if you develop a roof leak lumber may rot before the leak comes through.
I donor like it😊
I doner two 😊
Right on, the sewer line will be fun.
The house is on a steep slope. Fortunately the sewer line gets laid on top of the surface then covered with fill brought in to make a yard. Thanks for commenting!
😳No drilling! Just standing there.🤔
They do have to add drill stem. And pay attention to the tailings...
Strike oil or septic tank
Or buried power lines or oilfield pipeline? There is oil in the area, lots of production at 300 ft. We are away from it and had a good chance of not getting oil or worse, salt water. There are lots of brine wells around here.
What size of picker
I believe it was a 30 ton truck crane. The guy was very inexpensive and knew his stuff. I was going to walk the trusses through the trees but he convinced me he had enough stick to lift over. We put a tag line on this side of the trees.
It would be sent back
Ummm, they can't reload. You have one shot to get it where you want it.
Yeah no - not on my site, id be cancelling the delivery charge.
Maybe it's a regional thing. Been done this was for years, I've never had damage.
Yeah not on my job site
Sometimes it's good to see how other guys do it. This was good to get the trusses off the road. Very tight and congested site.
wtf he’ll no
Until a few years ago I'd never seen anything but side dumps. Not everyone does things the same way but different methods can be successful. No damage.
That's just how it's done. Always has been. I like it
It's a little uncomfortable the first time you see it. The do have roll off trucks around here now but I wanted the side dump to get the load out of the road.
I remember them days, gravy train
Nice!
Digging foundations for the new foundry?
That would be nice! This was for a house I built for a friend. It is detailed on Garage Journal.
Got a bit of slop in the bucket...digger got some age but still works ok
It does, and the operator had run it before.
Great video! I just started playing with fire, er, I mean hobby casting about 7 months ago and hoping to be making some things from cast iron in 18-ish months, (working my way up the metals by melting point). Thank you for sharing these vids!
Glad you're casting! I would recommend thehomefoundry.org Lots of good information and nice guys just trying not to get burned. Cast iron is not hard, just a little different, you cover it with charcoal or something to keep oxygen away from the hot metal. I've found I like replacing broken iron castings with brass or bronze often times. Cost of the metal is minimal and the parts look expensive.
Awesome video! These glass flask videos really help the brain wrap around what's happening inside. Thank you for making and sharing!
Thanks for your comment. I learned from them so I continued...
Thanks Andrew, I have learnt a lot from watching the metal flow in your tests. Helps to make sense of the theory. I really appreciate your effort. Hope you make some more videos on casting :)
Thanks for the kind words. I was doing this for myself and did learn a lot. Publishing them was a way to preserve the effort. There are more things I want to do but I am too time constrained right now.
Where did you get your seal kit from?
Apparently the seller I bought from is not selling this kit now. I bought CAPN3301A and I see several advertised on ebay. This is for a 5/8" rod. I believe CAPN3301B is for a 1/2" rod.