I scored three sweet OC75s from badgerific in his holiday PIF, like nearly two years ago, and finally got them into a tonebender mkii board and boxed up. I did the layout in Eagle, starting from
culturejam's layout (the image is no longer online), with board mounted vertical pots from Tayda. The enclosure is a B sized trapezoid (1590TRPB); I used a laser printable clear label and hastily sprayed on a few coats of clear acrylic. It sounds great to my ears--nice and smooth. I don't get a lot of range from the Attack pot (1K), but it cleans up nicely with the guitar's volume pot.

I mounted the board so that the signal flow is left-to-right, as are the jacks. I may regret that eventually, but I doubt it. In any case, the board can be mounted right-to-left (the knobs would be farther back that way).


The board layout is
shared at OSH Park. A BOM is in the works. It measures 60mm/2.3" from the pots' outside edges when they're mounted. They need at least 23mm/.9" of vertical space when mounted inside a box.

I have a few extra boards, including some that are slightly longer (70mm/2.75"; same vertical). I'd be happy to trade for similarly small and simple boards!