Knobs

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Knobs fit on controls, e.g. potentiometers or sliders and rotary switches. Splined push on knobs fit splined pot shafts. Pots with with round or D shafts require knobs with plain holes that have set screws to hold them in place. Most spline shaft pots have a slightly smaller diameter shaft than round or D shaft. Usually splines are 6mm while most round ones are 1/4" (6.35mm). So 1/4" setscrew knobs will end up slightly lopsided when tightened onto a 6mm spline shaft. Knobs fastened by a collet require a box spanner to fasten them.[1][2]

Potentiometer knob with set screw.
Splined shaft on potentiometer.

References

  1. ^ knurled vs round shaft pots, Muff Wiggler forum, March 2012
  2. ^ Wikipedia: Control knob

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External links

Suppliers