Tube Notching Guide

https://metalgeek.com/static/cope.pcgi

Im putting this up here in case anyone finds it useful in the future. I'm planning my crane and I don't have much experience cutting angles and joining pipe. I know they make guides you can buy in the store, but this program lets you plug in pipe diameter, angle, and wall thickness. Whereas the guides you can buy are for one size pipe and only allow for 3 angles.

Plus this one is free.

I like it!  There have been many instances that I've notched tubing and I usually resort to CAD to figure it out.  This makes it easier!