I had Frank Rollen make a 2mm cosmetic panel for a dual channel compressor that looked similar to how the UA LA-610 or 2-1176 looks. I drilled the holes on the 'bottom' thicker 4mm panel wider while the 'top' thinner 1.5 mm panel holes were just long enough to fit the shafts. So in a sense the pots sat 'inside' the thicker 4mm panel and latched onto the 'thinner' 1.5mm panel. I have no idea if this is how it is done and i also used knobs that had deep shaft holes. Had the knobs been a collet like sifam or elma or similar shallow shafted knob i might have made the bottom panel holes just wide enough. So i guess i would say knob shaft hole size is integral.
if you are reliing on the lower panel to support the mechanics it should be thicker then 1.5mm aluminum. how about milling around the but in a thicker panel and having a 1mm thin panel fot the lettering? a 90 deg bend helps a lot also- Michael
I think the answer would depend on how big the panel is and how much structural support you need aside from just the pots. It's pretty common to fix pots onto .050" (1.25mm) aluminum on 500 series modules. Whereas 19" rack mount tends to be thicker steel.
I am not 100% sure why the pot nut and washer needs to be covered by a cosmetic plate... are they not covered by the knob anyway? given we are talking about machining anyway, what does the cosmetic plate achieve that a 2mm counterbore in a 3mm plate will not achieve? Perhaps I am missing something.
Ahhhh, well if your knob is smaller than your nut, I see your problem....T
Is there any mechanical support for the pots, or is it just the solder then?I have been looking at emachineshop for getting plates made, might be a similar option in your neighborhood.