How to tap a thread in acrylic Perspex, Lucite, Plexiglass using your cordless drill driver

I recently bought a laser cutter (running on a Pi) and started working with acrylic (Perspex). I’ve sawn, routed and drilled Perspex before. It machines beautifully as long as you’re not too ‘greedy’ with your cuts (and if you’re too greedy, it …
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