This is a replacement joystick knob for the great Korg synths of the 80s -- DSS-1, Poly-800, DS-8, DW-8000.The joystick stem on these synths is exactly 3mm. I have made two versions of the knob, one with a 3mm hole and one with 3.1mm. Depending on your printer, the 3mm one may be a too-tight or...
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