Supro Valco style Volume and Tone Knobs (fits US style split shaft potentiometers

thingiverse

Tone and Volume Knobs for a Supro/National/Valco style lap steel guitar, perhaps other normal style guitars. This part is designed for a "24" "fine" splined split shaft pot, however could be reworked for the 18 spline type, the part that goes over the potentiometer is a separate object and overlaid on the knob model itself. I've included the .blend file in case you want to add any different lettering. This part is not a 1:1 replica of the original knobs since I don't have any to compare against. In particular the letter and marker dots are not the exact size, and I do not know if I got the same number of little grips up the sides of them. I was working off of photos of the originals and was unable to find anything high enough resolution/the right angle to get proper dimensions for these. If you're looking for a replacement that goes onto the original pot shafts (1/4" round, held in place with a set screw then check: https://daviesmolding.com/catalog/series/knobs/control/?SeriesID=1450 (It looks like these are nearly identical to what are getting sold on Reverb and other sites) https://www.mouser.com/ProductDetail/Davies-Molding/1475-PLAIN-HOLE-W-SET-SCREW (These are larger dimensions I believe) This part was made out of a desire to have something that retains the original look, but with volume and treble marked, and able to fit onto a modern standard guitar pot.