40mm test squircle (for checking tool paths and print behavior)

This is a 40mm test cube with a 15mm circle & square inside. I designed it to check tool path strategies in the slicer software and the actual print performance. Watch & hear what the print head is actually doing and stop at 30-50% print status. Then you can check the print quality and also judge the infill quality.

The screenshot shows Simplify3D with 15% Honeycomb infill and 1mm retraction lift.

Background:
I had several issues where the nozzle was hitting previously printed lines of th