Was not able to get through to anyone here today, but I have contact 2=20
other custom membrane switch companies about this and prices are way too=20
high for my project. IIRC at 100 pcs they're ~$30-$40 each... ouch!

Cheers,
-Neil.


On 9/5/2012 3:00 PM, Alan Schnittman wrote:
> The item pictured in your attachment likely uses a membrane
> switch.  See URL below which has a nice illustration on their home
> page.  I've no experience with nor connection to this
> manufacturer.  For the 50-100 pieces you need, a custom membrane on a
> stock enclosure might be a viable solution.
>
> http://www.nelsonusa.com/membrane-switches/
>
>
> -- Alan
>
>
> At 01:12 PM 9/5/2012, Neil writes:
>   >Of course I forgot the attachment...
>   >
>   >
>   >On 9/5/2012 12:52 PM, Neil wrote:
>   >> Question -- how are the "bumps" (domes) of each switch on the front
>   >> face here made?  I expect they are "pressed" or molded in with heat,
>   >> but is there some standard tool for this that I can buy, or do I hav=
e
>   >> to custom-machine some positive and negative mold for this?
>   >>
>   >> FWIW, I recently purchased a printer that can do front-panel type
>   >> graphics, so if I can make these domes I'd be most of the way to
>   >> making a better/easier custom dual-switch.  Yes I can do these flat,
>   >> but that makes the need for height-control more critical.  I'm
>   >> thinking I can use 2 layers of PCB (one as a backing with the traces=
,
>   >> and another with just square holes cut out for the switch bodies) an=
d
>   >> put a plastic overlay over it with the graphics printed on that.  I
>   >> can either print the graphic oversized so that I can fold over the
>   >> sides to cover the PCB 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
>   >>> would be a bunch of fabrication still. I'm really looking for
>   >>> something as ready-to-use as possible. This (attached pic) is what
>   >>> I've been doing so far.  2 SMD switches on on this, and a
>   >>> 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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