looking for an old IBM knob from a 609 calculator panel
mhs.stein at gmail.com
Tue May 28 16:29:35 CDT 2019
They look like something off an old stove ;-)
----- Original Message -----
From: "Bob Rosenbloom via cctalk" <cctalk at classiccmp.org>
To: "Electronics Plus" <sales at elecplus.com>; "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>; "William Donzelli" <wdonzelli at gmail.com>
Sent: Tuesday, May 28, 2019 1:55 PM
Subject: Re: looking for an old IBM knob from a 609 calculator panel
On Tuesday, May 28, 2019, 10:36:10 AM PDT, William Donzelli via cctalk <cctalk at classiccmp.org> wrote:
Those knobs look like they are cast pop metal or zinc or something,
They are metal for sure. Probably cast. They are smooth, though there's a bit of corrosion and pitting on them now.There's a set screw at the bottom of the back side.
Dwight suggest casting one. I've never done casting before but this might be a good thing to try it on.Would have to drill the shaft and set screw holes afterwards, and a bit of finish work to make them smooth.It's a cool panel so probably worth the effort if I can't find one out there somewhere...
On Tue, May 28, 2019 at 1:27 PM Electronics Plus via cctalk
<cctalk at classiccmp.org> wrote:
> Looks like a standard old Bakelite type knob to me. I pulled a lot from old equipment 30 years ago. I will check to see if any got salvaged.
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bob Rosenbloom via cctalk
> Sent: Tuesday, May 28, 2019 10:57 AM
> To: William Donzelli; General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: looking for an old IBM knob from a 609 calculator panel
> On 5/28/2019 6:42 AM, William Donzelli wrote:
> > I think that is an IBM specific knob. I will keep an eye out for one,
> > but do not hold your breath! It is certainly not a common knob.
> > Is it for a 1/4 inch shaft?
> > --
> > Will
> Yes, it's a standard 1/4" shaft. Might try and get one 3D printed if I
> can figure out how to draw it.
> > On Mon, May 27, 2019 at 11:41 PM Bob Rosenbloom via cctalk
> > <cctalk at classiccmp.org> wrote:
> >> A long shot I know, but I'm looking for an IBM knob that's missing from
> >> a 609 calculator panel I have.
> >> Photos can be seen here:
> >> http://dvq.com/ibm/ibm-609-pnl1.JPG
> >> http://dvq.com/ibm/ibm-609-pnl4.JPG
> >> http://dvq.com/ibm/ibm-609-pnl5.JPG
> >> I have no idea if the knob was made by IBM or was a common knob of the
> >> times.
> >> Thanks,
> >> Bob
> >> --
> >> Vintage computers and electronics
> >> www.dvq.com
> >> www.tekmuseum.com
> >> www.decmuseum.org
> Vintage computers and electronics
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