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ADR modules update 3

A quick update, since next weekend I’ll be in Vienna again so I won’t be tinkering for a while.

Today ordered the electrolytic capacitors and checked how to remove the knobs from the pot shafts. It was a bit of an unpleasant surprise to me, since I was expecting just a hex nut under the plastic cover cap as most of these style knobs have them. But instead there is some slotted rounded nut, some bespoke SAFIM brand brass nut it seems.
SAFIM Collet knob



Found out by some googling, the SAFIM Collet knobs are also used in designs by SSL and the likes.

SAFIM sells a special tool for this, but I’ll just make my own tool. It clearly doesn’t follow DIN546 spec for slotted nuts so I guess there is no alternative “standard screwdriver” anyway.

Added some cheap-ish 8mm slotted 1/4inch hex drive screw bits for the purpose to the order, and I’ll just grind or file my own “snake” style bit with an approximate shaft gap of about 5mm.

Meanwhile thinking about the enclosure design.
Cheers from the sane old continent!

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