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| snub:
I've never used one of these nor seen one except in pictures. I decided to build one using ideas from others, but throwing my own ideas in as well. I built 3 rollers and 3 'follow blocks' for 3/16", 1/4" and 3/8" tubing. They are 1" high so that in the future I might be able to bend 1/2" and 3/4" tubing. Here is a pic of it without the follow block in place. You can see the roller bearing that is encased in a block that has 8 pins for guiding it in fore and aft movement, depending on the diameter of the roller. The threaded handle pushes on the block and hence the bearing. A couple of pics of the block and bearing: Here are all the pieces: All set up and ready to bend: As you can see below, at 90˚ I have run out of follow block. The only insight I had into the length I should make it was from DiAcro, which said the length of the follow block should be 3 1/2 times the radius of the roller for a 180˚ bend. Perhaps my math is wrong. Anyways, I just backed off on the handle and reset the block. And finished: |
| BarryG41:
A nice job and very well designed. I made a bender years ago for a production application. Only for 5/16 tube, in comparison mine looked like it was gnawed out of steel by steel eating rats. Barry G |
| Bogstandard:
Snub, The way to get around the follower block problem is to use another roller with a groove cut in it, it works like an infinite length follower block. John |
| Bernd:
Snub, Nice piece of tooling you've made. Really does a nice job of bending. :thumbup: Bernd |
| DaveH:
Snub, Nicely made and a useful bit of kit. :clap: DaveH |
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