The windshield wiper knob from my 79' Jeep broke. It being extremely old there is not replacement part, so I decided to design my own.
First I needed to test fitment of the knob onto the jeep, so I used tinkercad to prototype mock up designs.
I measured the stock windshield knob to make sure I had proportions correctly. Then after I figured out the fitment, I designed two replica knobs on tinkercard: one replica and then one with an arrow head, since it is a Cherokee Chief. Its theme is an Indian chief, has special emblems, and paint.