Teenage Engineering OP-Z knobs

thingiverse

Teenage Engineering's OP-Z portable sequencer/synthesizer comes equipped with ball-bearing hall-effect encoders featuring a sleek, disc-like design. While they are quite impressive, some users may still prefer traditional knobs. Fortunately, the encoders include a standard LEGO Technics shaft profile receptacle, allowing users to attach their own custom knobs. With this in mind, one might wonder why not create and print some unique knobs to match the OP-Z's aesthetic. OP-Z Knob G, B, Y, and R v3 are designed as a set, each bearing the first letter of its corresponding encoder color on top. A special thanks goes out to Alexis Jeauffrain for providing the typography inspiration. For those who prefer an alternative look, OP-Z Knob Alter is available. This design mimics the upper part of the TE OP-1 encoders, offering a more OP-1ish appearance. When printing these knobs, it's recommended to use an SLA printer with gray resin to match the OP-Z color. Printing them upright will help avoid distortion caused by the peel process. Don't worry about the flat bottom; decent support should work fine, and any warts can be sanded down afterwards. OP-Z Knob FDM v3 is designed specifically for FDM printers and features a completely flat top with no inscriptions or detailing. This allows users to print it top-down without worrying about orientation. The knobs are designed for an accurate friction fit – they should stay in place but still be easy to remove. If they're too tight, simply scale them down slightly and reprint.