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Doug Goncz
 
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Default How to make tapered tubes?

From: Trevor Jones

There are machines used to swage the
tapers into chair and table legs.


You can make ONE metal part the hard way over a form, and braze it. Make it
niiiiice inside. Then put it in a tall container and fill all round with
concrete or mortar. Then you can roll your blanks up on a regular sheet roller,
press them into the "mold" and tack inside in two places with a stick welder.

Then, if you braze, file, and polish the outside, they'll look slick.
Stainless can be matched with the righ braze filler.

Another way to do it is to have a resilient base matched to the weight of a
large flat bottomed object which presses a tapered form into the sheet. With
the right distribution of weight and "give", you can roll the taper. You'll
have to deal with sprindback, but that's super easy: just make the small end of
the form a little long...

Something like a Vlier pad (several layers of inner tube butyl rubber from the
junkyard) is cheap and adjustable. The weight can be something like an anvil.








Yours,

Doug Goncz, Replikon Research, Seven Corners, VA
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