Bartosz Wucke wrote:
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cooperation fails, the drill goes really fast 2-3mm into the workpiece, snapping off immediately etc.) The problem is in software; the settings from the original software work flawlessly,

Can you not hack it in hardware and set a hardware dril speed ? Like Josepth said, you need to make absolutely sure the drill is clear before moving on.

Are you engraving PCBs or just drilling them on an engraving machine ?

Steve