Dash Knob - 1963 to 1964 Plymouth wiper

This knob is designed to fit a D-shaped shaft as used for windshield wipers (without the washer button) and the fan control on a 1964 Valiant, and to resemble the factory knobs. It is designed in two pieces to eliminate overhangs and supports.

I simplified the dished steps in the center, and changed the fluting to work with Sketchup and my beginner-level work. There is no provision for a set screw, but it fits tightly enough on the D-shaft that one should not be necessary.

ABS should sta