Hot Blue Pi

This is a casing for a Raspberry Pi 4, open top and passive cooling with a large heatsink. Knowing the Pi 4 can get hot and still avoiding the whining sound of a small fan, I went for a small, open top case and large heatsink. I printed all in PETG, a suitable material since the bottom and sides of the case remain cool.

I got these CPU temperature readings in a 21C room ambient:
vnc to a remote computer + youtube full frame: 57C
vnc to a remote computer + youtube small view on the youtube website: 59C
idle: 49C
and running Domoticz, its application: 51C