I just tested this with a Hydraulic Press VIDEO: kzfaq.info/get/bejne/p5l0prKenNrXmps.html

I'm 80 years old and I learn something new from this guy in each of his videos...Thanks for all.

Well you finally answered the question: "How do you put a square peg in a round hole?" You sharpen it and heat treat it, then hammer away! Great job! Thanks for the information!

“Just the tip” that worked about half the time in high school!

When you heat the tip of the rebar, watch the color move down the metal towards the tip, and as soon as purple hits the tip quinch it in oil and swirl it till it cools off. I've made cutting chisels this way in high school and we had to cut thru 1/2" bolts without damaging the cutting edge to pass the course. I still have and use my chisels I made 20 years ago

Awesome trick! One tip on heat treating…..it’s the correct temp to quench when salt will melt as you are heating it. Learned that from forged in fire! 👍

I once used a small broken 3 corner file & ground it to fit in my sabre saw, worked great as well...

Yes, I have been playing with rebar for years. if you have trouble resharpening it, heat it back up and allow it to air cool. This will make it soft again. Great video btw.

THANK YOU. been looking for a simple solution like this. I have to put carage bolts into a 4x4 1/4 wall square tube but only on one side and NO OTHER than a file would do it and this is going to save me a day of filing!

Thank you for the excellent tip! I don’t know how many times I have wanted to make square holes, you made it look easy!

Nice job! Re-rod is useful, no doubt. I have saved some big bucks making actuating rods for Cub Cadet tractors and others, by using my woodstove as a forge. One problems that I have run into- repeated heating does cause the metal to go swiss cheesy and become very brittle and crumble away. They are made from recycled steels and are full of inclusions and stuff anyway.

Great idea! Trivia- rebar is measured in 1/8 inch increments. Number 5 = 5/8 inch. Most rebar is schedule 40 with 60 and up higher grade.

Buddy, you have the idea's and DIY all figured out. Between you and Pawpaw, I get all the good stuff

I’m an old guy largely new to serious metal working and heard from “expert” sources that rebar could not be hardened. I trust results and you have demonstrated a contrary opinion that deserves respect, imo. Going forward, I will assume that the carbon content of rebar varies wildly and that not all rebar can be dependably hardened. Right? Great teaching. You rock!

That's a very good idea, I would have never thought rebar could do what a Machinists broach would be able to do. Learned something new this morning.

I'm a professional machinist and I have made broaches at work and at home but I have always made them from high-speed steel, I would never have guessed that rebar would harden well. Knowing that could be very useful for a lot more than broaches.

This is a great video. I didn't know whether you could do anything beyond case hardening of rebar but it looks like it's good enough steel that you can actually make decent hardened tools out of it. Like you said in the one part, annealing it will retain much of the hardness and take away the brittleness from the initial hardening. I learned how to do this from Tubalcain and fixed my old Brazilian-made single shot youth shotgun I bought when I was 14. There was a spring-loaded pin in the forearm that had bent because the metal was too soft and the forearm wouldn't stay on when breaking the breach. I initially fixed it by running some electrical tape around it and it stayed fine that way but it always bothered me that the tape was there. After learning how to harden steel parts, I pulled it apart, took the spring off and straightened the pin. I hardened it with water quenching, then I heated it back up hot enough that water would bead off of it and let it cool slowly. Once everything was cooled off, I reassembled with some light oil on the forearm and it works as it was originally designed. Stays put when breaking the breach and comes off when it's closed and you give it a good yank. The manufacturer probably cut a corner on that run and skipped the hardening process on that pin, so hardening that pin fixed it. I was so stoked when it worked. Haven't shot that thing since I was a teenager but it was neat to get it working the right way. Now when I pass that shotgun on to one of my boys they'll never know the difference.

Great video and sweet idea. The hardening process from what I have seen, was heating the metal until it is no longer magnetic. Quench in you choice water / oil, but they anneal the metal to soften it to be less brittle. So blue is next color during annealing, then air cooled or quenched. It’s been a while since I have watched a black Smith or knife maker, but worth looking into to avoid having more work to sharpen. Retired auto tech, but I still fabricating. With the price of weld shield gas, oxygen & acetylene has gone triple from invoices of 10 years ago, makes it difficult to justify a purchase. Great lighting, volume and camera angles are great. Having a tripod makes a huge difference. I hate the “One-banded” videos and they try to open the worlds toughest plastic parts box. I have thought many times, if they made cars out of certain plastics used in packages they would last forever! Thanks! I will not forget this when a future project would be better with a carriage head bolt. They have a valid place in the world. I thank Black Smiths from 150-200 years ago who formed these for “Round Top Trucks” and wagons plus stage coaches!

Since only the corners of the broach are doing the cutting, think about how you could make the tip of it round to fit into the hole and just have the corner a bit higher up and come in contact as the broach moves into the workpiece. Just a thought.

That looks like a good idea. I've always drill a hole and used a file to make a square hole. Your way is much faster.

About 8 months back I did a video about hammer broaching with HSS on a piece of aluminum. Recently tried it again. But this is a great idea. I had no idea rebar could be used like this. Best thing about yours, is you could also taper your tool to make for some adjustment

i always just filed holes square with a three sided file. this looks easier, well, faster at least.

The surprising bit, for me, was that you can harden rebar - got to try it myself :-)

this guy is amazing!!!! he is like the guy fiery of the maker trade

Good video!Been working with metal most of my life, and did not know that rebar would harden.Gives me a good source for steel that can be machined and then hardened.

Wow you're channel blue up. I've been here for a while and I haven't noticed your subs in a long time. You deserve it. Always quality content

This is the Second video of yours I watched. AGAIN, I’ve learned some new skills! Thank you for sharing!!

Kind of a cool trick. Especially the hardening part. A square file can work, but it is a lot of work. When I have to make just a few square holes out of round ones? I use my little cordless Milwaukie mini sawzall (called a Hackzall) with a fine tooth metal cutting blade that resembles a narrow jigsaw blade (but has the sawzall blade mount shank on it..). It cuts on the pull strokes, of course, while the tool foot is held tightly to the work, and files out the square corners real quick.

It's great to pass on the passion of knowledge.

Ive seen those made in a stepped configuration before but i like your head setup.

Always amazed at how much you know! I always learn something new from your videos

That’s a great idea love from oxford England 🏴󠁧󠁢󠁥󠁮󠁧󠁿

That's terrific. I'm trying to mount a wheel chair motor on a bike, this will help.

Great alternative to a square punch. I love the outro. I know that place and have driven by it thousands of times..

i wouldn't have believed it if i didn't see it. now i have to try it.

never seize to amaze me what you can do with simple stuffs !

I will definitely do this with aluminum or wood materials. Carriage bolts do look better on many projects. Not sure it’s worth the effort to punch 24 holes in steel, but the softer aluminum & wood materials--definitely worth the effort.

Did not know rebar could be hardened enough to broach more than cardboard! Have to try hardening some of my homemade rebar punches and other hackery tools now.

Nice broach, Dude! Necessity is the mother of invention!

Great idea Moe! I wonder if repurposing an old air chisel bit and using the air hammer would work to make square holes? Love the rebar idea !

So cut it about 6" long.....put in larger pipe( to keep straight and protect shattering parts from eyeballs) and use cheap bottle jack press to press thru metal plate. ......should work and no hammering....

I’ve been subscribed for a while now. I originally found your channel when I was looking for videos on my first car, a ‘95 Ford Escort. I subscribed because I thought you’d have more videos on Escorts, but I’ve stayed because you have way more to offer. I really enjoy your videos, no matter the content. Keep it up!

Awesome tip, Moe. You have more good ideas than any two guys I know.

To find the diameter needed I times the size I need by 1.414. So to make a 1/2 square you would need a 7.070 round bar. (.5x1.414= 7.070) you may be able to find this from a coil spring or torsion bar. Great video. Thanks for sharing.

I have always filed them, going to try this. Thanks

On larger sizes and thicker material, you can re-drill your round hole as your punch closes it up, to make it easier to get through.

Definitely a handy guy to have as a neighbor...and of course the pooch too

Wow neat. I'm going to through away all my square drill bits. Thanks

If after a few. Taps you put it back in the drill press it will make removing the rest easier especially with thicker stock

Hey that is a great way everybody has some rebar lying around

Kool! I drill a round hole then use an air filer to make it a square for carriage bolts. Super easy with the air filer from HF!

Like always another awesome video and I always love your dog shots.

You made a Great home made tool....carriage bolts are cheap to buy per pound at the farm store and The bolts are good to use on like making home made stoves and stuff

I’ve seen this same thing done using a square file. You drill the hole to size first (say 3/8”). Then take a square file that is the same size, cut off the tang, and press it thru the drilled hole using an arbor press or hydraulic press. The file only has to remove the metal from the corners of the hole. You just have to be careful to press it straight or you might snap the file, as they are very brittle.

You could probably use the right size carbide burr and shape your broach in a drill press with it chucked opposed to the drill chuck. Also maybe you could chuck the broach into a hammer drill that supports hammer without rotation?

I would have never guessed in a million years that a square hole in .25" steel was made with rebar.

Thanks for this video. Im a home hobby welder as well as retired. I'm pretty sure I will be making one of these broche's very soon

Great idea/work aid.... The only thing I might suggest is when you are about half way through (or as often as needed) is to redrill the hole to help clear out the metal that is gathering in the center. This will help by decreasing the amount of metal you have to broach out as it builds up...... Just a suggestion to a great idea. Keep up the good work..

Pretty dang nifty trick, not sure how much faster it'd be in thick material than a file but its well worth making a couple.

You made a broach. Nice job!!

This will prove to be very useful in the shop. Thank you for sharing.

Excellent educational video ! Not that I'm going to do it. But add another trick under my sleeve just in case when duty calls.

"If force is not enough you just need more force!"

Thanks for sharing. Good way to heat the water for my tea... hmmm? .. well now... it is tea time.

I don't like how AI spies in us although it did bring this video to me. Now I can tinker in the garage and make a new cutting edge for my 1984 snow blower without spending 40 dollars. Thanks for the knowledge.

Great explanation on how to make a square hole . I'm going out to the shop to make a new tool!

Good idea. (Fixing plow mounting?) I, similarly, made a 1/8" wood chisel.

You come up with some really good tips. Thanks.

Really good solution. Thanks. I need to get a propane torch now.

Wish I was as smart as you, great ideals

I didn't know Quenching on water worked too, i always seen oil Quenching. Thanx for tips

I work at a precasting plant... I can grab scrap short bits of rebar like that for free, we commonly use #3 up to #10.

Wow, I never wondered how to do that. Just assumed I'd have to file it out. Another super cool trick. Thanks again Man :). One day you'll be making your own DYI water jet, lol.

This is an education. Nice job.

Is it just me or is watching slo-moe drilling fascinating?!? Well alrighty then, time to make a few punches of my own. Forget all that hand filing, thanks for another great idea brother!

Great idea

Nice Job, I didn't know rebar would harden.. In Machine shop, you would normally rough drill the hole 5% - 10% over size, Yes, It'll leave a small radius on the flats, but, the broaching goes 10 times easier.. Making a smaller broach to rough it out, would help a lot.. 2 smaller cuts is much easier..

Thank you! The solution to my Carriage Bolt problem. Much appreciated.

That is great for carriage bolts. I enjoy your metal projects. rebar is so cheap and I am tired of all the pvc projects on YT.

Common 1018 steel will harden nicely, heat it up orange-ish red, not too hot, and quinch it in used, (black motor oil)... It's rich in carbon engine deposits, which attach to the red hot metal. After cooling completely, sandpaper the surface back to a shiny steel surface and heat it to a light tan- straw color, to take out some of its brittleness, let sit for a few minutes, cool with tap water viola' HARD TIPPED PUNCH.(CARBON IN DIRTY MOTOR OIL IS THE SECRET) ...NO CHARGE FOR THE INFO.

Interesting, I didn't know rebar could be harden, good video.

I only use square holes on snowblowers when restoring the auger housing. All I do is drill a slightly smaller hole with a drill bit. Install the carriage bolt and put the nut on stud side. I tighten the nut it punches through the circle and makes it the perfect square. Also use this technique on mower handles as well. Just another way to skin a cat

Thanks great build. TANK

Love this kind of ingenuity. Good job and Thanks!!!

Good stuff Moe. Now I just need to learn how to fix and build stuff so I can use all the cool stuff you teach me. LOL

65 thanks 4 another bad ass video. Keep ON

Once it was mushrooming into the middle you could’ve removed some of that material with the drill to reduce the work for the rebar blades. Maybe then it wouldn’t have got damaged.

Awesome. Always excited when I see you upped a new video.

Cool thanx for the video, that will help me forever now.

I must have missed the episode where you cleaned out your work space Moe

Guess it will depend on what scrap steel is used in making the rebar, but it looks hard enough for most of the stuff I'll be broaching. Thanks.

Last few seconds of the video where the best 👍🏼

Excellent, thank you again.

You clever devil :-D The square hole maker for wood is similar-ish, effecitively 4 wood chisels with the humped tops facing inwards. Also a drill down the middle, i thought it was magic untill i looked into the end, simple but so neat. I wonder if you could use a bottle jack to push a short one inch broach through the metal, it beats hitting it. If you like the Hammer time, don't forget the baggy trowsers :)

Nice! That is quite effective. Love that 🐕

Really useful lesson. Thanks and keep up the good work!

WOW GOOD VIDEO THX Ed Loretto Ontario Canada

Cool idea a hammer and a impact usually pulls the carriage bolt through for me

Wow I had no idea that rear could be hardened. I always thought that the carbon content was too low. Learn something new everyday

You know I am going to do this. Great for snowblower carriage bolts