Re: Two) The woodshed cam grinder is one of those mini sanding belts turned inside out, looped over the heel of the cam and spun by a rubber pulley on whatever motor or drive you can jury rig. No dials on this machine so you'll have to just sand it and mike it till you've taken off what you want.
"I am often asked how radio works. Well, you see, wire telegraphy is like a very long cat. You yank his tail in New York and he meows in Los Angeles. Do you understand this? Now, radio is exactly the same, except that there is no cat." : Albert Einstein