Guitar amp knob converter sleeve 4.75mm to 6.3mm

thingiverse

This is to deal with the problem of 4.75mm sized knurled shafts on various pieces of pro audio gear, like Peavey, Marshall, Crate, Fender, etc.... Where you can't get any knobs for replacement, as you can't easily find inexpensive or quick access to the proper knobs that actually fit these given amplifiers and rack items. No selection, no quality, no price, nothing.... What you need is a sleeve that fits the 4.75mm sized knurled shaft and allows you to use a knob for a 6.3mm knurled shaft accepting knob. Adjustments will have to be made as the tolerances are tight!!! Thankfully, they only take about 5-6 minutes to print each, so a few iterations and adjustments on your own printer should get you to be 'close enough'. You will start to run into problems of micrometers. Where one shaft-sleeve-knob set will be a hair tighter than the next, or a hair loose in comparison to the last. This is where you start.......