Bondtech Backplate

thingiverse

This is an **alpha release** and is totally open to suggestions for improvements! I was using the previous design for a couple of months until I had my first major hiccup, being a failure to feed into the hotend. Pressure was not evenly distributed on both sides of the filament, so I ended up purchasing an SLS nylon upgrade kit directly from Bondtech, to mitigate the issues I was having. The only problem after that was, I didn't have a way to mount it to the machine, so I remixed the shape of the backplate (*thing:3942196*) to fit the extruder. This design doesn't use the traditional linear bearings (*LM8UU*), but instead uses bearing blocks (*thing:1424346*) like the Mostly Printed CNC. The belt holder (*thing:4719574*) is also trimmed down to fit in between the blocks. I've also managed to retain the older/larger (18mm) ABL sensor instead of the PINDA probe (reason being the sensing distance, so I could continue to print on glass), by utilizing a little mount that slots in where the PINDA goes and tightening the bolt. From my experience so far, there's no movement of the probe and the accuracy has been virtually the same as before. (This has also been included in the files.) [Installation Instructions](https://github.com/derektata/giant-prusa/wiki/Build_Extruder_Carriage)