20mm Piezo Drill Jig
thingiverse
A tool for safely holding your 20MM piezo disk while drilling a hole through the middle for a bowden tube for use in a piezo-based Z probe. Tolerances came out perfect on my machine, your mileage may vary. If you need anything resized let me know and I'll get around to helping. The top has a skinnier point of entry (to constrict a dremel bit I use to get started), the bottom hole is 5mm. If you don't start with a skinnier bit, just start from the bottom I suppose, or drill out the top hole. Stefan Giudici
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