I had a reasonably productive today today, making 8 of the chassis parts whilst snapping two cutting bits. More time was spent being frustrated with my poor Fusion360 CAM skills than actually making parts, so hopefully tomorrow will go better as I figure out the process.
One bit of weirdness I couldn't figure out that caused one of the snapped bits was the feed rate randomly increasing mid cut. They were regular 2d contour toolpaths and occasionally the feedrate would increase ~10x just for a few millimeters, then drop back to normal. The code looks fine in the mach3 toolpath viewer, but the I don't know really what I'm looking for.

I also need to get better at photographing transparent parts:
2017-08-12 23.47.21.jpg