http://www.metalgeek.com/

 

There's a coping calculator here that is intended for pipe and tube.  But it works for any  rounds.

 

Input the sizes of the rounds that you want to being together, Tell it the angle and offset and  hit calculate.

Then print off the result and wrap that around whatever you need to cut.

 

Edited November 25, 20178 yr by Ron Dudelston
tags added

That might just come in handy! Thanks!!

 

(now if I can just figure out how to interpret it  )

Here's one  with a visual graphic that changes when you slide the buttons