Are you as stupid as me, breaking your windshield fluid cap on your precious model 3? And you don't want to spend big bucks on a piece of plastic that costs less than a euro/dollar to produce?
I broke mine, and I was quoted 100 euro for a replacement. I designed this simple, yet very functional replacement cap for my Tesla Model 3 which also fits a model Y.
Printing
Use a material that has some heat resistance and chemical resistance, don't just use PLA, unless you want your cap to be deformed and melted.
I printed mine in ASA, but I can also recommend PC or similar.
Printed at 0.2mm height with 0.4mm nozzle on a Prusa Mini+ and a Prusa i3 MK3S+ with ASA.
The author marked this model as their own original creation.