Ender 3 X Gantry Plate Jig

thingiverse

Jig to drill an extra 3mm mounting hole is the factory aluminium X Gantry plate. *Why?* When using a printed adaptor plate to mount a custom hotend or fan system I found that relying on only the 2 existing 3mm mounting screws was never optimal. Most systems try and get around this by either hooking around the plate somehow or using the wheel mounts. So I decided to add an extra 3mm hole which mirrors the one on the lower left. This seemed like the most logical place and makes it easy to add the additional hole to existing STL files. Here is a jig I made to help get the hole positioned accurately. The holes are all printed slightly undersize to allow for them to be expanded with the appropriate sized drill bit. The template was spot on for the two plates I tried but check everything lines up on yours because the holes may vary between batches.