Jamie
Sept 11,2023"This is a vector object? then draw a piece that reachs both ends, and boolean them together…" It’s likely that whatever the configured speed is in gcode will show as 100%. The percentage may be meant to show changes from base (100%) using on-screen overrides. Test that the speeds for engraving are indeed changing by making one with very slow speed and one with very high speed. The difference should be apparent.