External case for SKR 1.3, PI 3, 2 Buck converters and 92mm fan

thingiverse

### UPDATE - September 1st, 2019 Added **f3d** per request. ### UPDATE - August 31st, 2019 I've finally reached a point where this project feels complete. The **v3** version of the STLs is the most current version. Printing them with the outer face down on your build plate won't require any support, and they're relatively easy to print. Pre-assembly: - I strongly advise screwing screws into the holes meant for them before attempting assembly. This makes a huge difference. - It's also a good idea to do all wiring beforehand, such as leads for buck converters, fans, and PI. - With some persuasion, the hex key can fit through tabs at the bottom, making it easier to tighten top screws. Assembly: 1. Attach fan to Top 2. Attach PI to Rear 3. Attach SKR 1.3 to Bottom 4. With Top lying flat on a table, align Rear, Left. Insert one 12mm M3 through Left and Rear and secure to Top. 5. Align Screen with Left and Top. Insert one 12mm M3 through Screen and Left and secure to Top. 6. Flip case on Left side and install buck converters. Plug into Fan and PI 7. Align Right with Top, Rear, and Screen. Attach with 12mm M3s 8. Tilt assembled case onto Screen and install screen in opening 9. With case laying on Top, gently flex sides out and install Front (IMPORTANT: Please see image of how I fed my hex key through the tabs for the bottom in order to easily screw in. Be careful not to over-tighten, as it may bump out the front) 10. Lay case on Left of Bottom and attach all wires 11. Flip to the right over Bottom. 12. Test to ensure wires aren't hitting your fan and everything works. 13. What I did for the bottom was rotate my printer so the case hung off my desk, then screwed in bottom screws. Optional - I put felt pads on the bottom of my case to make clearance for screws. Sometimes, I don't even screw in the bottom. ### Screws 6 - M3 x 12mm (Corners of walls) 4 - M3 x 15mm (Bottom) 14 - M3 x 4mm (PI, Screen, Mainboard, Buck converters) 2 - M2 x 4mm (Buck converters) NOTE: These are just what I used; you could likely make do with others. # OLD UPDATE ### THIS IS A WORK IN PROGRESS I decided to create an external case for my Ender 3 that houses all my electronics. This was made in Tinkercad and is far from finished. I shared this publicly to gain feedback. I'm currently redesigning it in Fusion 360 so it's easier to iterate on. I'll make sure to update as I redesign, but since I'm using it successfully, I figured I'd share. Cautions: - I needed to get creative with screws due to poor depth measurement. - Buck converters' screws were a bit hard to attach, so I ended up gluing them in place. - Need 90-degree USBs to attach PI to SKR. I ended up wiring PI to SKR using GPIO jumpers