Getting ones with longer shafts isn't that easy and they tend to have a 4mm screwed shaft length as standard. Any longer and the simple geometry of a longer switch shaft in the same diameter threaded tube stops the switch contacts from working as well, so there's a limit to how deep the threaded section can be without messing up the whole switch. I think you're best going for a Switchcraft selector switch and a round extension nut of the sort used on Gibsons where the body is too deep for the shaft alone. One like this: https://www.axesrus.co.uk/Switch-Cra...ut-p/p3501.htm
Note that the Switchcraft switches have a different (imperial) thread to the (metric) kit ones, and I haven't seen those extension nuts for metric switches, though they may exist.
Alternatively, you could reduce the thickness of the wood where the switch sits. It's been done before. Personally I'd always fit a Switchcraft switch in place of the kit ones as those cheap switches do have a habit of failing without warning. They may last for ages, but quite a few fail fairly quickly, normally with at least two positions just going open circuit (without going scratchy beforehand).
You'll need a 24-spline knob if you've got a CTS pot. Hard to find sellers that makes it clear if their knobs are 18- or 24-spline.
Last edited by Simon Barden; 03-11-2020 at 01:41 AM.
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