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-   -   Bending SS for a chiller ? (http://www.homebrewtalk.com/f51/bending-ss-chiller-392018/)

Ki-ri-n 02-22-2013 12:10 AM

Bending SS for a chiller ?
 
I'm making a SS chiller to go inside my kettle. I tried bending around a smaller diameter than my kettle but it started to kink. Any tips on how to bend this right-without a 3 wheel tubing bender?

It's 1/2 OD, welded SS tubing, 75 feet, that's already in a 2-3 foot coil.

lumpy5oh 02-22-2013 12:14 AM

I have read that if you fill the tube with water and crimp the ends before bending it will keep from collapsing.

azwillnj 02-22-2013 01:08 AM

Quote:

Originally Posted by lumpy5oh (Post 4930265)
I have read that if you fill the tube with water and crimp the ends before bending it will keep from collapsing.

Not sure how well water would work, but I have used fine grain sand to bend 1" steel tubing before with great success. And all you need to do is duct tape the ends

tyzippers 02-22-2013 01:15 AM

+1 to the sand method. If you're going to put water in the tube, it needs to be a sort of brine and then frozen. That's how they make french horns and trumpets. but the sand method is easier for our uses. There are also bending springs, but I don't think that would work very well in this situation.

acidrain 02-22-2013 03:25 AM

Go to Harbor Freight with your coil of SS tube, and "try out" the wheel bender. :D

AlCophile 02-22-2013 03:35 AM

Try on a test piece: fill, not so much that it bursts when bent....rem'br, volume decreases at bend. BUT fill with something HARD but water-soluble. Helluva lot easier to remove than sand. Good luck.

Ki-ri-n 02-23-2013 06:41 PM

The harbor freight bender only goes to 3/4 diameter.
I've heard of using water & sand before. I just wasn't sure of the success or how messy it may be. With sand in SS, can you still bend ny hand? I thought it would be too hard?

Double_D 02-23-2013 06:43 PM

I can tell you from experience, trying to bend stainless at home sucks. I tried to make a 50' coil I got from grainger smaller for use in a herms system and it was a bastard. I just put it in the recycling and will be buying some copper.

Yellowirenut 02-23-2013 06:51 PM

http://image.made-in-china.com/2f0j0...ube-Bender.jpg

Spring tubing bender
Lowes, home depot and Harbor fright should have them.

Double_D 02-23-2013 07:04 PM

^^great for copper, stainless not so much


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