Anycubic Kossel Under-bed Peizo Mount

Still unprinted, as I'm waiting for new arms so I can use my whole bed (hopefully,) but this is a design for mounting 27mm piezo disks under the bed, using a plunger system. This is inspired by https://www.thingiverse.com/thing:2446460 but I didn't like how thin the pins were, and increased them to 10mm dia. In addition, I have three holes drilled into my heated bed, and designed in a screw mount for the whole thing.

This is hopefully going to fit my early-model Anycubic Kossel that I'm in th