Below is a link to a slide show with videos of the roughing and finishing passes, of a carving of terrain (where my sister lives in CA) in birch plywood. The new stepper drivers and grblHAL/Teensy4.1 controller (and the good MPCNC design) allow me to move the finishing bit at over 50mm/sec, even while doing a lot of moving up and down in Z. The roughing pass went even faster.
In Google Photos, click on the i with a circle around it to see captions of each photo and video… Feel free to leave comments or questions.
LINK TO SLIDESHOW