One day I decided to build a small desktop CNC. Unfortunately I overestimated forces applied on the spindle and I had to alter the initial idea - I made the laser engraver. There is no direct contact in between tool and material and even less sturdy frame can easily handle the process. some test pieces below. the work was done for the testing purpose and private use - no intellectual property should be harmed, although, with respect, in case I'm wrong, please contact me.