Odp: [sdiy] Why I was asking about UNEF etc.

[Roman Sowa]

Here's what I do
use thick panel, 3.5mm best, and use flat-top piloted drill.
It's a tool that has round tip (pilot) to hold it in the hole,
and 4 cutting edges that make bigger hole than the pilot,
but flat, instead andled as with normal drill bits.
That's a lot of explanation for a tool that for sure has
nice name in English, or German ;)
Now if I had a camera....

So I use this drill to make about 2mm space, enough
for standard 3/8 pot's nut. Than I can use knobs as
small as the nut ant it will cover it, being just about
0.3mm over the panel.

I wouldn't recommend making thread in the panel and
screwing the pots to it. You never know where the leads
will be then.

Roman

----- Original Message ----- 
From: <jhaible at debitel.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, May 16, 2003 4:07 PM
Subject: [sdiy] Why I was asking about UNEF etc.


> Thanks to all who answered - I think I have understood this
> now.
> 
> Why have I been asking?
> 
> I have made a little redesign of my 3200 front panel.
> The 16mm knobs for the temperament pots were too bulky,
> compared to the 21mm knobs I'm using for the pull-pots
> of the regular parameters.
> 
> Now I found a nice little 11mm knob that matches the
> bigger ones - so cute and tiny, and they fit on
> a 1/8" shaft of these Bourns 9mm conductive plastic
> potentiometers. (Bourns 3310Y) 
> And while this _does_ work when I mount the pots with
> a nut, the drawback is that I must avoid the knob
> to touch this nut. (The knob is larger than the nut,
> so it will be covered. But it's not large enough for
> nut to dissapear inside the inner hole of the knob's
> skirt.)
> 
> So I wonder if I could just make a thread into the
> aluminium panel and crew the pots in from the rear,
> _without_ a nut on the front panel.
>