Ender 3 rear electronics case with 60mm fan 3D model preview
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About this 3D model

It includes a strengthened left lid with space for a 60mm fan for better cooling, as I have found the 40mm fan insufficient, as the case lies pretty much on the bottom of the case. Also, it was kind of floppy without the strengthenings. There are also 9mm and 7mm legs for the printer, covers for the back of the aluminium extrusions that can be used with the stock screws and a slide in rod that secures the lids in place, as this works better for me than the screws. Things falling into the fan is not really an issue for me, but you can easily find fan guards for it. Credit to TeachingTech for the original model