For some reason my photo of the mess I made didn’t upload. I’ll have to add that to the last post later.
Now I’m thinking of the saw. The bigger the radius of the motion, the more speed it well have, which also means less oomph. I don’t know if it would be appropriate to use the word torque here, but I want to. On the other hand, if I have a small wheel, I can skip most of the linkage. I could just bolt the blade to the wheel with enough room to avoid the end of the motors axle. The only thing is, I think I should look at saw blades more.