Knobs

Knobs fit on controls, e.g. potentiometers or sliders, push button and rotary switches.

Use with potentiometers
T18 push on knobs fit splined pot shafts. Pots with with round or D shafts require knobs with plain holes that if not push fit, 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 6 mm while most round ones are 1/4" (6.35mm). So 1/4" setscrew knobs will end up slightly lopsided when tightened onto a 6 mm spline shaft. Knobs fastened by a collet require a box spanner to fasten them. Note that knobs to suit D shafts come with different pointer orientations.

Aries, Macbeth, Modcan B
Aries modulars used ridged knobs which these days are mainly used by Ken Macbeth and on Modcan B modules.

Buchla
Buchla synths use Rogan knobs, and also Davies Molding knobs on 100 and 200 series modules. Available through group buys at Muff Wiggler forum or at:
 * Mouser, Davies Molding small: 5164-1610AA
 * Mouser, Davies Molding big: 5164-1600BM
 * Thonk, Davies Skirted Knobs

EMS
The EMS VCS3 knobs were made by Cliff Components, part number CL1606. Available in two sizes, the cap insert was satin or shiny silver, or with any of nine colours. Cliff no longer produce the knobs with coloured inserts. Available at:
 * Thonk, ‘EMS’ Style Knobs
 * Bridechamber, Knobs

Eurorack
BugBrand, Analogue Systems and Metasonix use Re'an Soft-Touch 16 mm skirt knobs for 6 mm T18 shafts, however these are no longer manufactured.

Cwejman and Intellijel use knobs manufactured by Sifam with separate coloured caps.

Doepfer, TipTop and Plan B use 16 mm wide knobs on 6 mm T18 shafts. TipTop are Eagle 450-4010

Frac
Blacet use Re'an Soft-Touch knobs for 6 mm D shafts, however these are no longer manufactured.

MOTM
MOTM uses ALCO PKES90B1/4 knobs. Available at:
 * Bridechamber, Knobs

MU
Moog style "fluted taper skirt" control knobs also used by Synthesizers.com, STG Soundlabs, etc. are manufactured by Cosmo Corporation. Available at:
 * Synthesizers.com, Parts
 * Bridechamber, Knobs

Mutable Instruments
Mutable Instruments use Eagle 450-BA761.

Serge and Wiard
Serge and Wiard use the Davies 1900H knob.

Suppliers

 * Knobs, Thonk
 * Knobs, Strings Direct
 * Knobs, Small Bear Electronics
 * Knobs, Tayda Electronics
 * Knobs, Das Musikding
 * Tuning knobs, OKW Gehäusesysteme
 * Knobs, Rapid Electronics
 * Knobs & Dials, Mouser Electronics
 * Control Knobs Index, Surplus Sales of Nebraska