How to Bend Square Tubing So It Doesn't Kink - Kevin Caron
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- Опубліковано 30 кві 2019
- #MetalFabricationTips #MetalFabTips #KevinCaronArt
From www.kevincaron.com - Sculptor Kevin Caron answers a viewer's question about bending square tubing - and shows how to do it ....
Kevin Caron has a piece of mild steel 1/2" x 1/2" square tubing with 1/8" (.125) wall. Recently a viewer asked, "Can you bend square tubing?"
Yes, you can - if you have the right tool.
When you get a pipe bender, or a pipe roller or tubing roller like the one Kevin Caron is using, you get dies with it. He shows how the dies' upper edge helps hold the sides of the pipe to keep them from kinking.
With square tubing, you need square dies. On this roller, all three positions - the two idler wheels and the drive wheel that moves when you turn the handle - are square. It performs the same function to keeps the sides of the tubing from kinking.
But why does it kink?
You are bending the tubing from the middle, not from the top or bottom. That means the top of the bend needs to get longer, or stretch, and the bottom of the bend needs to get smaller, or shrink.
If your pipe is too small for a die, again, the sides of the pipe that you're trying to bend are going to want to bow outward as you're trying to stretch the top and shrink the bottom at the same time. So make sure you have the right sized die for the job.
Kevin Caron has some square dies on his Harbor Freight pipe roller (which is different from a pipe bender). He begins turning the adjustment screw on the top of the roller, which forces the drive wheel down between the two idler rollers, to first show how you can bend with it, even though it is a pipe roller. You just use the adustment screw withou turning the large "ship's wheel" to move the metal forward.
Then he puts the metal back into the roller and wheels it back and forth as he gently adjusts the screw. Kevin Caron says one big secret is not getting into a hurry, but making your passes slowly to get a nice roll in the tubing.
Hopefully this free how-to video helps you get your job done. Kevin Caron appreciates you watching his channel and suggests you hit that "subscribe" button to see a new how-to video every week. You can also visit www.kevincaron.com to see his wild sculpture, but you might want to stick around for another moment to see Kevin assert the family-friendly nature of this channel ....
"Inspired sculpture for public & private places."
Artist Kevin Caron has been sculpting full time since 2006. See - and hear - his amazing metal and large format 3D-printed sculptures, which are found in public and private places coast-to-coast and online at www.kevincaron.com.
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So glad your business is keeping you busy, thank you so much for the time and energy in sharing your information.
You crack me up Kevin! Great explanation as always and in simple language too. Keep up the good work and thanks.
The pipe is bending in the middle is a great tip. I wasn't thinking of it that way and it cleared up a lot. Thanks for sharing.
Glad it was helpful!
Great Kevin, thanks for your tips from the UK
Thanks for watching Keith!
Thanks guy!
Looks like your on a roll !!!
I love it when Kermit gets busy in the worksop.
Oh yeah! Just about every day of the week.
Ok, I’m developing a theory that Kevin is ALSO This Old Tony. #ChangeMyMind
It's called the neutral axis. This is where the compressive and tension balances in the material section. The compressive strength is higher than the tensile strength, so the neutral axis is not in the center, but is anywhere from 35% to 48% of the thickness. In sheet metal they use bend deduction or bend allowance to calculate the position of the radius. In precision metal stamping, it is normally done by calculations backed by actual bend data.
After active duty, I went into the stamping and injection molding industry as a mechanical engineer. We had to hold extreme precision on bends and their angles. There is also spring-back so the inside bend radius and angle is smaller than the outside. This is very difficult to predict as the material strengths can make a huge difference. Both the chemistry and heat treatment of the raw material has a tolerance just as the physical dimensions that affect the bending.
Robert S
BSME
Interesting! Thank you for watching and posting.
Hey Kevin, as always awesome video
Thanks for watching and posting James!
.Hey Kevin..........where did you purchase the square tubing dies from? Do they come in different sizes as well? I would like to purchase some different size ties for tubing as well. Please Advise
Thanks, Jim
I just searched for square tubing dies for harbor freight bender. Lots to choose from.
Kevin, can you comment on the filling the tube with fine sand method? I've never tried it.
Thanks for sharing,
Cheers
I have tried that and could never get it to work right.
Where can I get one of those machines
Hi there, thanks for the video, if I need to curve a 1”x1” 16ga mild steel tube but the full length is 25’ and the max bend in middle is maybe 9” pushed out compared to a straight line. Do I still need a tube roller or is there a simpler way? Just need to make 8 PCs. Thanks in advance
Sorry but you will need a tube roller for this job.
Do you think that this would and could bend 3/8 or maybe smaller rebar in a 4 foot diameter circle?
It mIght take a while but it should.
I looked at harbor freight for the bender you have. It says round pipe bender. Do you have to change the dies for square tubing?
Yes you do have to change the dies for square tubing. They are available online.
Where did you get the square dies for the harbor freight roller?
Online at swag tools.
Kevin, you're a great person to ask this. I have some 1" x 3" rectangle tube, 14 gauge, that I want to cut into 6ft sections and bend into an arc shape like a bow..so a long gradual curve over the whole piece with a center apex of ~16". So literally like the shape of a bow and arrow" bow shape. And yes the curve is along the flat 3" side. How can this be done?
A pipe roller with square dies to fit your stock. Going to be VERY hard to do without hydraulics. I would either cut and bend and reweld the stock you have or.... 1 inch stock to roll the top and bottom of the curve and flat sheet to cut and weld the front and back on. You could try filling the stock with wet sand and capping both ends, then heat and roll or bend but I have never had any luck doing that.
Where do you get the square tube die for the harbor freight tool pipe bender?
swagoffroad.com
Did you buy those rollers, or did you make them?
Bought them online. Swag offroad through Amazon.
You made it simple at 1:40 when you did a Hand Gesture, showing how your Thumbs get closer together, and your fingers get further apart. That could have been a good part of the lesson, telling people to watch what happens to the distance between the upper and lower sides.
Damn, and I missed it! Thank you for watching and posting.
does this rolling tire produce enough force to push tube forward doesnt it slip ?
No slipping at all. You just have to go slow and let the rollers do their job. Thank you for posting.
Magic wand! LOL!!!!
Pretty cool tool. I'm assuming harbor freight has the square tube roller as well?
Where did you get the square tube dies? Harbor freight didn’t have any. The bender only comes with round tube bending dies.
Got my question answered in a below comment… he just googles square dies for harbor freight bender.
👍👍👍
Be nice if they made an affordable mandrel bending machine. You can only bend slightly on these kinds of benders. Thanks for the video!
Have to get a mandrel bender some day. Thanks for watching.
Where did you get the square tubing rollers
Amazon of course, www.amazon.com/SWAG-Tubing-Roller-Compatible-Freight/dp/B00LBFQ2A0?th=1
Where you got the square dices from?
If I remember correctly, I got the square dies from Swag offroad.com
Ok I found the machine where do you get the square roller baring
Search for "Swag off Road Dies" and you will find them.
@@KevincaronSculpture thank you sir I want to get back to welding I have some ideas in mind. I enjoy your channel! When I started welding I referred back to your videos and that’s a big part of how I learned!!
Where did you get your dies?
Google!
www.harborfreight.com/3-piece-die-set-66598.html much less $$ then a lathe
Hi Kevin, You know that you really don't want me to hit the subscribe button. If I did I would loose your video notification. So I am not going to hit is because
I want to keep watching your videos.
Now for a question. Is it time for a new electrode when the plasma torch starts sounding like a Jiffy Pop pan heating up? It did look a tad bit eroded.
Thanks for the info and fun stuff you share.
Yeah, when it spits or cuts sideways it is time for a new set!
@@KevincaronSculpture Yep, It cuts much better now. Thank You
Where did you find the square dies at
Over here.. www.amazon.com/SWAG-Tubing-Roller-Compatible-Freight/dp/B00LBFQ2A0
Thanks
Now I just need a pipe roller :)
That's what I said!
Hey Kermit, I was watching the video and my GF was listening and asked if that was Kermit the frog? The more I listened the more you sounded like Kermit but definitely that wasn’t miss piggy asking questions, but I mean no disrespect, and thank you for your great videos
Thank you I guess. Better to sound like Kermit then look like Miss Piggy I guess.
Some how I seen this video before , must of been same tool round stock
I want to bend and cut 38 x 38 x 3
Okay, so what are you waiting for?!?
Try it by going 90 degrees!👆😬
Now my head hurts!
@@KevincaronSculpture 🤣👌
Only problem I can hear you clearly but can't see much what you are doing
I will have a talk with the person behind the camera.
John Goodman
I would've liked your video but it would've ruined the 666 sorry :(