[Amps] Variac knob wanted, with 3/8 hole !

[David Gow]

Fair Radio Sales has a nice Collins style fluted 23/8 diameter black know
for a 3/8 inch shaft.  Their part number is KNF-5.  It is $7.50
Dave W7VM

On Sun, Sep 30, 2018 at 5:33 AM Alek Petkovic <vk6apk at bigpond.com> wrote:

> Same problem here.
>
> To get me out of the woods, I had a piece of 1" x 3/8"aluminium bar
> lying around. I cut it to length and drilled a 3/8" hole through it and
> then a hole right through the side, to take a M5 tap. I stuck a M5 screw
> in each side, in lieu of grub screws and used the hacksaw to cut a
> groove in the end of the bar, to act as a pointer.
>
> Rough enough and good enough until something better is found.
>
> 73, Alek. VK6APK
>
> On 27/09/2018 10:44 AM, Jim Thomson wrote:
> > I desperately  require a knob for my small variac.  The shaft is  3/8"
> diameter.   The max skirt I can handle is
> >
> > 3"...and maybe  3.25" max.   At this point  I will use anything I can
> get my hands on....as long as it has a 3/8" hole for the  3/8"  shaft.
> >
> >
> >
> >
> > I checked  my supply of knobs....and they are all  the usual  1/4".
> And none of em can be machined out to 3/8"  either.
> >
> >
> >
> >
> > If  anyone could help,  it would be much appreciated.  I just require
> one knob, thats  it.
> >
> >
> >
> >
> > Jim  VE7RF
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> >
>
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