I have a Craftsman scroll saw that I want to be able to control motor rpm. Has anyone taken the control board out of a variable speed drill, jig saw, router, etc. and wired it in to something like a scroll saw? I am trying to do this on the cheap and wondered if anyone has do something similar to this. Mainly as a challenge, but also because I want to slow down my scroll saw to do some extremely intricate stuff. At least intricate for me with a scroll saw. Thanks in advance.