The blog blog.tommy.sh has a great post about designing your own potentiometer knobs:
Who needs to buy new potentiometer knobs when you can make your own? Armed with patience, calipers, and a 3D printer, this is quite doable. (Note: this advice will also apply to rotary switches and encoders!)
Why would anybody even want to “reinvent the wheel” when commercial potentiometer knobs are plentiful and readily available?
Control uniformity: A project may use different types of pots side-by-side, each with different dimensions or shaft types, and fitting store-bought knobs may not match. By making knobs that internally match different specifications but have identical outward appearances, you can abstract away the underlying technical differences and have a consistent interface for the user.
Custom position markings: I recently made an instrument with D shaft pots, all mounted at odd angles to the enclosure, and I wanted their “0” positions to point in a way that my store-bought knobs wouldn’t allow. By making my own, I was able to have a custom rotation degree that wouldn’t otherwise be possible.
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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Knobs! A good friend has been making knobs for some time; here are some of hers:
Bought my printer based on her demo of same: Dagoma Neva.