M7 is the diameter. It's metric. M7 = .2755" OBVIOUSLY... I'd add some
extra "wiggle room". the .282" diameter hole should work fine.
Here's where I found the conversion:
http://www.aaronsmetricscrews.com/free_table.htmI hope this helps.
- Brice
http://www.SynthModules.com ----- Original Message -----
From: "Jeffrey Pontius" <jpont@...>
To: <ModularSynthPanels@yahoogroups.com>
Sent: Wednesday, February 04, 2004 9:49 PM
Subject: Re: [ModularSynthPanels] Hole width for .25 pots?
> > I am working on a panel that will have a few Alpha potentiometers
> > involved. (mouser part #31JN405)
> >
> > Does anyone know that value off-hand? I downloaded a few sample
> > front
> > panels, and the closest thing I found was a hole that was 2.82 in. I
> > don't have my tape measure nearby, so I can't tell if that's in the
> > ballpark or not.
> >
> There are several panel designs in the Cat Girl folder that have pot holes
> for Alpha pots (as I'm trying to use mine up). For example, check the
> file in the Buchla type folder in the Yahoo groups Files directory. This
> panel was designed for Alpha pots. As you noted above, the pot hole
> diameters are .282in, and the Alpha pots fit comfortably into these holes
> (with a tiny bit of wiggle room).
>
> If you have a pot on hand, a useful tool is a drill bit template (not sure
> what else to call these). These are typically a flat piece of plastic
> with various hole sizes in English and metric units. Very handy for
> determining the size of a hole for a pot (or switch or whatever).
> Jeff
>
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> Yahoo! Groups Links
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