What is D Shaft Knob Generator?
Nagy's D Shaft Knob Generator makes replacement or custom knobs for the D-shaped shafts found on potentiometers, rotary encoders and many appliance controls. It is a compact MakerWorld customizer with close to 6,000 customizations.
A labeled diagram on the model page explains every setting. You set the overall diameter and full height, the height, width and fillet of the grip on top, and the diameter and depth of the D-shaped hole so it fits your shaft. A small indicator line on top can be sized by length and depth. The bottom can be full, hollow, or extended with a collar that reaches down around the shaft.
It is free with a MakerWorld account. It suits audio gear, printer and electronics projects, and appliances with a lost knob. Measure the shaft with calipers, print one test knob and adjust the hole size if the fit is loose or tight.
What you can make
- D-shaft knobs
- Potentiometer knobs
- Encoder knobs
How to use D Shaft Knob Generator
- Measure the shaft diameter and length
- Open Customize and enter the sizes
- Choose a full, hollow or extended bottom
- Generate, download and print
What you'll need to print it
Filament and parts that suit what you make with D Shaft Knob Generator.
PETG
- Bambu Lab PETG Basic (affiliate link) Amazon
- Polymaker PETG (affiliate link) Polymaker EU: 3DJake (affiliate link)
Code gives 15% off your first order at Polymaker.
M3 heat-set inserts
M3 screws
Also handy
Digital calipers
Filament dryers and dry boxes
- SUNLU FilaDryer S4 (affiliate link) Amazon
- Polymaker PolyDryer (affiliate link) Polymaker
Some of these are affiliate links: we may earn a small commission, at no extra cost to you. More about that
D Shaft Knob Generator pros
- Clear labeled parameter diagram
- Three bottom styles
- Indicator line for pointer knobs
D Shaft Knob Generator cons
- Only for D-shaped shafts
- Plain grip, no knurling options
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