E3D dual height adjustable holder for K8400

thingiverse

When I swapped my print extruder from default K8400 to E3D, it quickly became apparent that dual printing was a challenge when the two extruders weren't precisely aligned at the same height. At that point, I couldn't find a suitable solution for this issue here, so I embarked on creating an adjustable E3D holder of my own. After several rounds of optimization, I finally arrived at a nice version that I'm eager to share. To assemble this project, you'll need five printed parts: Some M3 hexagon screws, some M3 washers and nuts, and some superglue to secure the nuts in place and prevent them from snapping (optional but recommended). Each screw is paired with a washer, and the two adjustment screws get an extra washer on top. This ensures that the screws don't dig into the plastic. I've added a cone at the front, which can be extended later using a custom fan holder. You'll need to adjust your printer's X zero position - I added some extensions (see next-to-last picture) and set the extruder distance in the printer settings to 50.4mm (X dimension). You may need to fine-tune these values further.