Geeetech i3 Electronics Cover

Summary

I wanted to fix a few issues with the original design plus add the possibility to use a 120mm fan.

Once I was there I also added a few more vents and an additional cable exit for the bed heater.

WARNING
I haven't tested the 120mm designs yet, so feedback is welcome.

UPDATE
After receiving some feedback via comments here I've added two additional models for the 120mm fan using a classic air vent design: the honeycomb grid seems to increase the fan noise sensibly.

UPDATE
After some more feedback I've added a revision B which reduces the grid fins on 120mm format but, most importantly, also adds captive nut slots so that threaded inserts are no longer required: you can now choose to use an M3 nut or use a threaded insert.

In addition, in revision B the 60mm fan position has been moved, to reduce interference with cables running inside the box, and a 40mm version has been added for those willing to use the stock fan.

To recap:

• classic version has been reported being noisy and doesn't allow captive nut use
• revision A has the 60mm fan positioned sub-optimally and all of them doesn't support the captive nut
• revision B adds captive nut support, reduces the number of fins in the fan grid improving airflow for 120mm fans, adds guards for the 60mm fan and a 40mm version

All in all, revision B is superior to revision A and has only one little aesthetic drawback: a little bump on one side which is required to accommodate the captive nut.

Please keep comments flowing, I look forward to seeing your makes!

Post-Printing

Using captive nuts

There are two slots capable to accommodate two M3 nuts: the should be a tight fit requiring a little force to get pushed in, ensure the nut have the corner pointing outward, not a flat side, otherwise they will not work.
If your nuts are a little too thin for the slots they might fall out during the assembly: use a drop of viscous glue (like vinyl glue) to prevent the nuts (especially the top one) sliding out.

Position the nuts appropriately before pushing them into their slots

A drop of vinyl glue will prevent nuts from falling out of their slot during assembly