Modular Synth Panels

>Since we started the standards, topic, how about hole sizes?
>
>On my custom panels I used 3/8 (0.3750) inch holes for both the jacks and 
>the pots, and 1/4 inch for the switches.  When I measured some MOTM panel 
>jack and pot holes, they were a tad smaller than 3/8.  I asked Larry Hendry 
>about it and he said that MOTM does make those holes 3/8 inch.  And 1/4 
>inch for the switch holes.  The paint slightly reduces the measured size.  
>You may notice when installing a jack, that it is a tight fit.

Sometimes too tight. I had to drill out the jack holes on my last MOTM 
module. I think my designs use 9.5mm holes for the jacks. Whatever the 
sizes, they work well. I don't think holes are that much of an issue because 
of the washers. Oakley's Omeg pots have larger threadings than 
Bourns/Spectrol, I believe.

>
>The standard MOTM Lumex LED goes in a 5/16" hole.  For my MOTM-OMS-820 I 
>decided to use regular LEDs, so I made the LED holes 1/4" in size.  Since 
>we are going for MOTM standards, we might want to agree on the Lumex part 
>and hole size.  Another approach would be to make all LED holes 1/4" and 
>let people who want to use the Lumex part just drill them out.

LED holes do matter, though. At least one orderer uses a lot of T1 led's, so 
the holes are 3.05mm. I use T1-3/4 w/o clips (I use epoxy behind the panel), 
so I need 5.05mm. We can use the smallest needed diameter for any given 
design. Especially if you're using clips, drilling is no problem. Your bit 
won't skip out of a 3.05mm hole :)

Scott

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