100 Pcs Heatsinks (Multi-Size&Multi-Color), Heatsink Kit with 3M 8810 Conductive Adhesive Tape Aluminum Heat Sink Copper Heat Sinks Cooler for Raspberry Pi 5/4/3/Zero VRM SSD 3D Printer

I used stuff like https://www.amazon.com/dp/B077VL3M2Z and https://www.amazon.com/dp/B0963BMGFY

https://a.co/d/01lgqixy - link for heatsink kit I used a drill press and very low rpm, about 600 rpm keeps the plastic cool so the holes still have a clear wall in the hole. With very light drilling pressure. If you use too high of an rpm it will melt the plastic and create an opaque finish on the wall and/or melt the plastic which doesnt look good with a translucent shell, and too much pressure could crack the shell so you need to be careful. Then I ran the drill bit through the holes by hand to clean up the holes and used tweezers to pick off any burrs. Finally hit the outer surface with scotch Brite to knock off any edges without damaging the finish of the shell. The same could be done with a hand drill if you firmly secure the shell on a flat surface and can manage 600 rpm or so with your finger lol I used some scrap pieces of wood as a backing surface for drilling. And a headlamp to help with accuracy. 😅 I'd recommend totally disassembling the device to do this, it's messy and could easily damage components otherwise. Edit: Also, the heatsinks need to be slightly offset as in the pictures due to the bracing of the back cover of the shell around the processor/ram. I've done two of these now and both needed to be offset in this way for the shell to be able to close properly.