Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Malolo's screw-less / snap fit Raspberry Pi 4 Case & Stands

by Malolo Jul 1, 2019
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This is probably my favorite pi case on this site! I really wish I had dual extrusion so I could do the dual colour designs.

The good news is that you don’t need dual extrusion for the multi color versions. Have a look at the description under Thing Details“. I tried to explain there how to create the multi color prints with a single extrusion printer (search for “Multi-Color printing“).


Great work, I'm really impressed how well it fits and works. Just one suggestion: I forgot the heat sink and I've learned that is not so easy to open the case again. It might helpful if you add two small slits between the parts, left and right beside the usb and ethernet ports. It might then be possible to push a screwdriver into the slits and open the case with a turn of the screwdriver.

I'm not sure this is easily possible due to the overlap of the snapping area (at least if the slit is supposed to go all the way through).

Great design! I'd like to use the full mesh top but can't find it in the files. Can you post it?
Thanks much!

Hi Kai,
for some reason the zip file that you can download via the "download all files" button contains the old files (I have no idea why that is or how I can change that). You can however find the file you are looking for in the "Thing Files" section above. Most likely you are looking for is this one.

Hi, yes! Awesome. Thanks again!

Can you make one that locks just like it but for Pi 3

I already did. You can find it here.

Malolo's screw-less / snap fit Raspberry Pi 3 Model B+ Case & Stands
by Malolo

Hi, Thanks for the new mesh files! In Bottom_Mesh_SM.stl, there appears to be one hex filled in that sticks out and seems out of place. Is this intentional? It sticks out because it does not appear to be required for the board pegs. I've attached PrusaSlicer 2.1 screenshots.

Hi Daniel, that's definitely not intentional. I uploaded a fixed version.

I struggled quite a lot to close the case (Top_H20_Hex_SM_Fan40_Screws + Bottom_Base_SM). I eventually managed to close it by removing the top of some inner cylinders in the bottom part. I don't think a "snap-in" design is suitable for a rigid material as PLA.

I honestly have only tested it with PETG so far but even though PLA is a bit stiffer than PETG I am surprised to hear its a problem since quite a few of the makes seem to be made from PLA

I see. Maybe also using two different brands of PLA for bottom and top hasn't helped.

I made mines with 2 different brands of PLA and it worked pretty well. Granted I realized that once I snapped the cover on, I wasn't going to be able to remove the cover without breaking it.

Reopening is much easier if you start at the back (where the usb and ethernet ports are). Its fairly easy with petg but as i said i have no experience with pla.

I went in from the side opposite from the HDMI connectors. Push the wall in a little, stabbed a plastic pry tool through tiny gap, and popped it off from there.
But hey even if it breaks, I just gotta print a new piece =)

This is just amazing! looks great! Snapfit works perfectly. I love it!

only thing: I would love a version that also covers the usb ports because the metal that is standing off the ports is pretty sharp. (why do so many cases just leave the metal of the usb ports visible at the top?)
and also a bottom that does not allow access to the microSD card.

why do so many cases just leave the metal of the usb ports visible at the top?

Well ... to make the case as slim as possible. But there will soon be a version that is higher (mostly to add room for a fan) an therefore will cover the usb ports as well.

Super excited about a fan version. An HDD version would be awesome as well!

great, looking forward to it.

This design is phenomenal! Best case for the Pi, both printed and purchased. I was stunned by the great design and fit when I first tried it. Really really well done. Thanks for your time and effort and happy to test any prototypes you have in the pipe! Thanks again!

Thank you for your kind words - I will indeed have a rather big update ready soon.

so i ordered my raspberry pi 3 b+ and it should be arriving soon but i have some questions. i got this fan and heat sink (https://www.amazon.com/gp/product/B07C9H9LJN/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1) and I was wondering, would the base case still fit even with the copper heatsink on the bottom and the other 2 on the top? I also made a quick appendage in fusion that (i think) should fit the fan (30x30x7mm) in a way i like, and I was hoping to get some advice to see if it would work (see image). i would appreciate any help and also this is a great design :)

The distance between CPU and case top should be about 11.8mm, so there should be plenty of room for the heat sink. The distance between case bottom and board is 3.0mm. The area where the copper plate is supposed to go has some stuff on it but since according to Amazon it's only 1mm thick I would assume it should fit without problems as well.
Your design for the fan looks nice - the only question I would have is how it will be kept in place (It seems like it might easily slip out of those slots).

Thank you for the help! And to answer your question I made that slot just barely bigger than the fan itself (around .5mm on either side) so it would just slide in and stay in there. Thats worked for me in the past, so im hoping it does now too. If it doesn't i can always put double sided tape on the inside of that slot to hold the fan in. I'm not planning on moving it around too much so im not too worried about the fan falling out.

Just got my pi 4 starter kit with heat sinks. Fits great, prints great. very nice work. Thumbs up.

This is the best RPi case I've ever printed. Perfect snap fit.

Thanks for posting this. I printed out the bottom piece along with the remixed 30mm fan mount from HAZ1 and everything fit together nicely. Great work!

What a great and perfect fitting design. Just what I needed after first printing out other designs that where impossible to fit the Pi 4 into. Thanks for those incredible models!

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Very good design.
Raspberry Pi 4 B needs good cooling.
Can you make a version with active cooling using the 4010 fan?

I might do that when I have the device and find the time. Meanwhile you could try one of the remixes.