Today I removed 6 pounds from my sled (became 18.5 pounds after removing) to see whether weight made a difference from yesterday’s curved cuts. It did not, the line perfectly matched the curved cuts from yesterday.
Then I re-rigged to the top-feeder setup and ran the trapp2 outline using firmware with both the v1.03 motor.cpp and the v1.06 motor.cpp. Both produce a perfectly accurate pattern. Ruler straight along the whole angled length. The difference from yesterday’s curved cuts was the change from bottom-feed to top-feed.
Tomorrow I’ll re-rig back to bottom-feed to make sure the change is repeatable.