BLTouch Mounting Shim

thingiverse

Upon testing the gap using this alignment spacer (https://www.thingiverse.com/thing:2267858/), I determined that I needed to raise the BLTouch by 1 mm. I decided that the best way to achieve this was to take a section of the mount I was already using and create a slice from it in the thickness I required. If printed with the same filament as the mount, it would be nearly invisible. Even here, with the mount made of PETG and the shim made of PLA, you'd have to look closely to tell that there are two pieces. I provided the OpenSCAD source, so you can edit it to produce shims of different thicknesses as needed. (You could also do the same by scaling the Z-axis in your slicer.) The photos show a 1.8-mm shim made with the goal of zeroing out the probe Z-offset in Marlin. This sometimes kept the probe from triggering before the nozzle crashed into the bed. If I had read the manual, I would've known about the 8.3-mm gap that's supposed to be between the probe body and the bed when the nozzle is on the bed. With the heatbreak screwed in so it's level with the top of the part of the extruder into which it screws, I ended up with the 1-mm shim available here.