My experience with CNC started about 6 years ago, because I like to make my own tools for wood working (including but not limited to Panel saw, Dust collection, And others). When I saw the CNC on youtube, I new this would be the project for me. After much surfing on the web, I settled on the "Build Your Own CNC Machine" (a 2 foot by 4 foot model). I saw an expansion in my future (maybe 4 foot by 4 foot or larger) so I settled on four Nema 34 stepper motors 878oz. I know this is like putting a V-8 engine in a Volkswagon. The build went well. Long story short, the test did not go well. The Z axis lost steps on the up side. I ask questions in CNC message boards but was shunned and found no answers. After many weeks of trying the project was shelved. I have moved to the state of Florida upon retirement. I am in the process of re-wiring the CNC. I may have some questions later, for now I am reading the many threads here and look forward to interacting with you all.