I created this enclosure for a VJOYCAR OBD2 HUD that I got from Aliexpress to show Temperature/RMP/Speed/12V for my Mini Cooper S since it lacks all this info. I wanted it to look as OEM as a 3D printer can do so I made it round.

It is a bit fragile so add a good infill for the small parts and use high temperatures or speed for the layers to adhere properly especially in the screw mounts. In my case the screws broke the print because I tightened them too much.

This is the product in question: https://es.aliexpress.com/item/1005004514537380.html, it works perfectly fine with my car and it shows accurate data.

There is a mount that attaches it to the OEM Tach as well as an optional Carplay/AndroidAuto display also fom Aliexpress: https://www.thingiverse.com/thing:5778510