On Tue, 20 Mar 2018 15:09:49 +0100, Emanuel Berg
wrote:

AMuzi wrote:

http://www.yellowjersey.org/gth8.jpg

Also, how does one know how much to file away?
Like if you have one tube that has diameter A,
and another has diameter B, and A B, and you
want the second tube to be at an angle X from
the first?

There are quite a number of simple computer programs that given the
diameter and wall thickness and the angles the tubes are joined will
print out a template that you can use to mark the tube.

I use Tubemiter.exe that dates back to DOS days :-)



If we return to the lathe guys they have
a small thing with rods that can be pushed back
and forth to form a pattern, perhaps something
like that can be used to do a template if it is
difficult to compute?
--
Cheers,

John B.