Drill Jig for 20mm Piezo Disk

thingiverse

When Building a Piezo Mount I had difficulty getting the hole in the disk central, so I over engineered a solution that worked for me. I printed in PLA because if you get it hot enough to melt the plastic you've probably damaged the disk. In the end I found the best solution was to use a sharp wood drill bit in a tap holder and you are through in seconds. You can use brass inserts or nuts on top, but tighten up quite tight, making sure the soldered leads are in the cutout and the disk won't spin. One side effect is that the chipping of the ceramic around the hole is much reduced. For the Piezo probe look at:- https://www.thingiverse.com/thing:2319993 https://www.precisionpiezo.co.uk For my Ormerod 2 mount look at:- https://www.thingiverse.com/thing:2834328