Retro Guitar Hardware.

Apologies that this is not computing but I know a few here are guitarists. I've had a Westone Thunder-1A guitar since the eighties. The volume and tone knobs are a bit tired now and I've always wanted to make some as per the original and I know the Westone owners are sometimes looking out for repro's. They are a brass knurled part with an internal broached hole to fit onto the potentiometers. The first photo is the original tone control for the active circuit.

tone_control.jpg



Looking into how they were made I found that nobody makes a knurling tool to match the original pattern so I had to make one, or rather a couple of knurling wheels. It was great fun heating them up to bright orange and plunging them in water to harden them.


1.3mm_knurls.jpg



I got cracking on the lathe and after a bit of a trial run I started to get some results with the knurls.


1.3mm_knurl.jpg



Wish I had a larger lathe as mine struggles a bit with the forces required to push the knurls into the brass bar. But I'm really happy with the result.

1.3mm_40deg_knurl.jpg



After knurling, the ends are drilled and counter-bored ready fro broaching, then parted off into the correct length.

For the markings on the tone control I tried using letter and number punches. Also made a custom arrow punch and a jig to place the punches over the part, but I'm having some difficulty getting consistency. I may go to a local laser engraver to get them finished.

Here are some almost complete, just need broaching.

T1A_knobs.jpg

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Ed.D
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