So I have my mpcnc working great. Vacuum table made with it and the dealt works great. I really want this cut foam board for FT planes to use for STEM and intro to flying. The machine makes great cuts but like most, the needle breaks between the bearings and the motor. So a couple of questions. Which cutter head are people having the most success with? What are people using to measure the rpms? Here is a video of the system running. This is before the vacuum table was up and running.