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4hv.org :: Forums :: General Science and Electronics
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Bending 10mm copper tube

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Arcstarter
Wed Oct 28 2009, 02:58PM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
 		EDIT: Sorry, IAmSmooth already said this. I either started the reply before he said it, or completely skipped it.

But, for what it is worth, there are a bunch of great ideas... I think the salt or play sand may be a viable option for me, whenever i bend copper.
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tesla500
Thu Oct 29 2009, 07:22PM
tesla500 Registered Member #347 Joined: Sat Mar 25 2006, 08:26AM
Location: Vancouver, Canada
Posts: 106
 		I've had good results bending tube by filling the tube with water, freezing it, then bending it while frozen. Easy to clean out too.

I picked up this trick from the show How it's Made, where a trombone maker used it to bend large diameter, thin walled brass tubing.

David
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Proud Mary
Fri Oct 30 2009, 11:47PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
tesla500 wrote ...

I've had good results bending tube by filling the tube with water, freezing it, then bending it while frozen. Easy to clean out too.

I picked up this trick from the show How it's Made, where a trombone maker used it to bend large diameter, thin walled brass tubing.

David

Does water only expand when it thaws?
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MinorityCarrier
Sat Oct 31 2009, 12:07AM
MinorityCarrier Registered Member #2123 Joined: Sat May 16 2009, 03:10AM
Location: Bend, Oregon
Posts: 312
 		Water expands when it freezes.

The frozen water for tube bending is a great idea, I'll have to try that sometime.
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