NancyJohnson Posted August 6, 2024 Posted August 6, 2024 Just bought some concentric pots (with solid shafts) for a project, I would have liked to have used some existing knobs but they're a little too big. The concentric pots have 3/16th" and 1/4" diameter shafts. I ordered some Allparts brass sleeves SKU# EP-0220-008 which will appear to fit, but beyond this, what's my option? Quote
JohnH89 Posted August 6, 2024 Posted August 6, 2024 Just fixed an old Peavey PA up for a local bloke . They have 3/16 pot shafts and knobs are almost unobtainable . Used 1/4 knobs but applied a couple of small lengths of heatshrink to the 3/16 shaft . 2 1 Quote
NancyJohnson Posted August 6, 2024 Author Posted August 6, 2024 1 hour ago, JohnH89 said: Just fixed an old Peavey PA up for a local bloke . They have 3/16 pot shafts and knobs are almost unobtainable . Used 1/4 knobs but applied a couple of small lengths of heatshrink to the 3/16 shaft . Absolutely great call on the heatshrink. I just had a quick test...requires a couple of short lengths to cover the individual shafts and applied one after another. Works a treat. Brilliant! Cheers! 1 Quote
JohnH89 Posted August 7, 2024 Posted August 7, 2024 7 hours ago, NancyJohnson said: Absolutely great call on the heatshrink. I just had a quick test...requires a couple of short lengths to cover the individual shafts and applied one after another. Works a treat. Brilliant! Cheers! No worries . Glad it helped you out Quote
Bigwan Posted August 7, 2024 Posted August 7, 2024 I've seen thin wire used for this purpose, coiled helically around the pot shafts. 2 Quote
bremen Posted August 9, 2024 Posted August 9, 2024 Heatshrink (or "heartstrings" as predictive text would have it) is right up there with wd40 and gaffer tape. Quote
Jean-Luc Pickguard Posted August 9, 2024 Posted August 9, 2024 I had a pair of knurled-shaft pots on a bass where I wanted to fit knobs made for solid shaft pots. To make it more difficult one of the sticky-out halves on one of the pot shafts had broken off. My solution to this was to mix up a small amount of milliput epoxy putty and use it to build up the pot shafts. It was very easy (and satisfying) to get the resultant diameter to match that of a solid shaft pot just by shaping it with my fingers, checking with a dial caliper gauge as well as eyeballing it and offering up one of the knobs to check the fit. I left it overnight and fitted the knobs the next day where they went on straight without issue. Quote
m3nutter Posted August 19, 2024 Posted August 19, 2024 I had a reasonable amount of success with a grub screw knob using a shim made from coke can Quote
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