Question -- how are the "bumps" (domes) of each switch on the front face=20
here made?  I expect they are "pressed" or molded in with heat, but is=20
there some standard tool for this that I can buy, or do I have to=20
custom-machine some positive and negative mold for this?

FWIW, I recently purchased a printer that can do front-panel type=20
graphics, so if I can make these domes I'd be most of the way to making=20
a better/easier custom dual-switch.  Yes I can do these flat, but that=20
makes the need for height-control more critical. I'm thinking I can use=20
2 layers of PCB (one as a backing with the traces, and another with just=20
square holes cut out for the switch bodies) and put a plastic overlay=20
over it with the graphics printed on that.  I can either print the=20
graphic oversized so that I can fold over the sides to cover the PCB=20
edges, or dip in plastidip etc first to coat/hide the edges.

Cheers,
-Neil.


On 9/5/2012 11:31 AM, Neil wrote:
> Haven't done this before, but from what I know, it sounds like it=20
> would be a bunch of fabrication still. I'm really looking for=20
> something as ready-to-use as possible. This (attached pic) is what=20
> I've been doing so far.  2 SMD switches on on this, and a=20
> custom-printed label covers the top.
>
> Cheers,
> -Neil.
>
>
> On 9/4/2012 3:45 AM, IVP wrote:
>>> it's very time-consuming to make the housings. I need about
>>> 50-100 of these, and really dreading the thought of .....
>> On a couple of occassions I've found it fairly convenient to
>> make silicone moulds (from a wooden master) and cast ad
>> hoc fittings in polyester
>>
>> But I do have those materials to hand for other work
>>
>> Joe
>
>
>

--=20
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