I am making a lathe. I would like to control spindle speed and feed speed with timing belts. For threading ect. The idea is not having to machine all of the gears and it would be nice and quiet.Also no backlash for threading. I have been looking at the timing pullies and they are expensive. I have been looking at misumi.Do i have to machine the pullies?I just do not see this being that hard. OR AM I SMOKING CRACK!Thoughts?