RatRig V-Minion Electronics Enclosure

This is a Remix, merge and refactor of SquirrelBrain's and Orson80's awesome case designs for the RatRig V-Minion.

I needed more space for my SKR3-EZ, which the Orson80s design fit, but I also like SquirrelBrain's RPI modular design, so I merged them.
 

Main Differences:

• Added dual fans on the lid with shrouds to protect from falling debris.
• Added openings for Y-motor.
• Changed lid to open from the top and separate from the sides for easy access when wiring.
• Thicken universally.
• Thicken lid using honeycomb to cut down on material used.
• Footprint offset now supports easy extension for larger boards like the Octopus and Manta.
• .step file includes a variable to set the board hole size. Included files are for 3mm heat inserts.
• Added tie-wrap mount points.
• Re-orientated the boards.

Currently supports:

• SKR2
• SKR3/3-EZ
• SKR E3 MINI V3
• SKR PICO

Parts Needed:

9 - M3x4 Heat Inserts

1 - M6x6 (rear frame mount)

1 - M6x4 (side frame mount)

2 - M6 t-slot nuts

9 - M3x8 Socket Head Cap Bolts.

I included the RPI4 mount from SquirrelBrain's project. All of his other RPI mounts will work as well.

Installation Tips:

• Lid fans flow direction is towards the board. This is to keep cooler air from hitting the bottom of the bed.
• Install the heat inserts for the board from the bottom of the enclosure.
• For the SKR2/3, install the top left bolt first. 
  • Context: For all of these minion cases, space is tight. 
  • Trying to keep the build volume < 180mm for those who this might be their only printer (for now).
• The USB connections to the RPI are also tight against the side of the case, but will fit.
  • I suggest ordering a set of these to be able to remove the RPI easily without having to remove the lid: https://a.co/d/eVGiaVJ
  • On v3, I will add 10mm to that side which should be enough clearance and will keep it under 180mm.

Contact:

• Please leave any feedback, good or bad. 
• .step file is included but I am willing to make updates if they're needed for improvements.

Revison Updates:

12/23/22 :

• If you're using SquirrelBrain's or any Y axis cable chain. I added “Y_CHAIN_MOUNT (FRAME)” which clears the top hole.

12/24/22 :

• Added chase for z motor harness.
• Corrected 6mm rear frame mount. I added a support so the case would not deform as it was tightened. This was causing the lid to be hard to align.
• Corrected (2) 6mm frame mount clearances.
• Corrected board orientation to keep stepper drivers heatsinks away from the RPI.

Happy Printing!