[geeks] A wizard's steam valve has a knob on the end

[Nick B]

McMaster Carr has tons of raw materials/parts, but I'm not sure they have
knobs of arbitrary dimensions.
Nick


On Tue, Jul 23, 2013 at 11:30 AM, Phil Stracchino <alaric at metrocast.net>wrote:

> Fellow geeks and wizards,
> I need to find a replacement knob.  It's actually for a just-replaced
> steam valve on an espresso machine.  I *could* order a replacement for
> the cracked OEM knob, but I don't really want to because the OEM knob is
> a poor design, molded plastic relying on a flat leaf spring.  I want a
> knob that will outlast the valve.  I don't really care whether it
> matches the original, I just want it to work, keep on working, and not
> crack or slip.  I'm ideally looking for a molded hard-plastic (phenolic
> reson, say) knob with a brass bushing and a set screw.
>
> The shaft it needs to fit onto is a D-section brass shaft, 0.230"
> diameter (possibly nominally 6mm), with a .055" deep flat (so, .170"
> diameter across the flat).  Knob OD must not exceed 1.5".
>
> Anyone have any suggestions where to start looking for such a knob?  I
> figure there's enough frobbers of assorted mechanical and electronic
> hardware here that it's likely someone will have a good starting place
> or two to suggest.
>
>
> --
>   Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
>   alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
>   Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
>                  It's not the years, it's the mileage.
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