Well I have a cheap inaccurate design that I'm gonna throw together to start the project. The frame can be reused and most of the equipment I just found a cheaper design for the linear movements. The rest stays almost the same as far as motor mounts and threaded rod. the idea is to get a working model and use it to do some projects I have that don't need the accuracy. Then I can generate income to pay off the machine and then pay for upgrades. I got free slightly used motors from work. I think they are powerful enough. We replace about 12 motors inside a moving light fixture whenever 1 goes bad because it takes so long to take the thing apart. Usually about 8 or so motors have decent life left in them. So I am rescuing them.