[Heath] heathkit parts

[Neil Morrison]

If the outer part needs to be clear I can only suggest machining from
acrylic and screen printing it.

Then cast the center and glue the two together. You can cast acrylic but it
might involve a lot of trial and error. It also looks like printing on a
one piece unit would be an SOB.

Otherwise this might need a total re- engineering - a new dial system with
a digital frequency read out.

Very unoriginal of course, but sometimes I ask, "What would Heath do given
today's 'stuff' etc."?

Neil

On Mon, Jan 21, 2013 at 9:32 AM, <G3OOU at aol.com> wrote:

> **
> Hi Neil
>
> Thanks for your book suggestion. My background is in RF electronics, not
> mechanics so my suggestions may not always be entirely practical!
>
> What would be needed is a clean original from which to make the mould.
> Then a choice of moulding material that could be cast and would be
> sufficiently strong to take the mechanical stresses. The centre part does
> not need to be clear but the outer ring does.
>
> I have a desk top decorative item that has a collection of clock
> parts cast in a clear block which looks like acrylic or polystyrene. Feels
> very hard but no idea how it would stand up to stresses.
>
> Do we have a mechanical engineer in the forum that could provide some
> ideas? I suspect that the market for these is significant.
>
> 73
> *
> Bob*
> Bob F Burns
> C Eng, FIET, MSE
> Amateur Radio Callsign: G3OOU
> Registered RSGB Instructor
> G-QRP Member No: 6907; Zone: 14, QRA: IO91WH; WAB: TQ25
> Secretary of Crystal Palace Radio & Electronics Club: www.g3oou.co.uk
> Technical web site: www.qsl.net/g3oou
> Follow G3OOU as @BobFBurns on Twitter Http://twitter.com/BobFBurns<http://twitter.com/BobFBurns>
>
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