Rotary encoder knob for led backlight
45x23mm, for 6mm encoders,

Two filaments were used: Black PLA (or dark silver) and clear PLA.

Rotary Encoder Knob
With fuzzy skin.
First layer 0.2mm
Each subsequent layer 0.12mm

For even distribution of light from the LEDs, I suggest printing a diffuser from transparent PLA or PETG.

The circle in the center of the knob is also made of transparent PLA.

Once printed, the parts fit together perfectly. They can be glued together.