After many struggles of my own making, I finally have my 1500x1500 machine up and running. I cut some 3/4 plywood yesterday at a pretty good speed, around 150ipm with no issues and a great looking cut.

Today I tried cutting 15mm acrylic and had some issues with the machine stalling. I was cutting very conservatively, I thought. 18000rpm, 60ipm, .1" doc. I'd get about halfway through the cut and it would start stalling.

My drivers are set for 1/8 microstepping and I have 48V PSU.

Anyone have any ideas why this would be happening?