This is a box for housing the Melzi electronics on the Tronxy P802 and many more. Includes a cable chain end for a chain that moves in the Z direction, a mount for a 40mm fan, and slots for a fused IEC power input and a USB type B input. Also the mounting screws are the other way around, originally they were sticking about 6-8mm into the print area and could interfere with huge prints.
All parts require a total of 14 M3 screws and nuts. Minimum lengths for screws are:
4x M3 x 20mm for the PCB, main case and main cover
2x M3 x 5mm for the USB connector
2x M3 x 5mm for the USB and IEC connectors cover
2x M3 x 8mm for the cable chain end piece
4x M3 x 16mm (or more preferably rubber mounts) for the 40mm fan
Print two of the cover ends and one of each of the other parts. The biggest part is turned 45 degrees on the print bed before slicing. The tolerances are very small but works on a 220*220mm bed.
The zip file includes gcode that works on my printer, a well as the original Sketchup files (please do not hate on Sketchup).
I haven't printed this yet but I will ASAP. might go through some changes if necessary.