From: "Frank Bemelman"
Subject: Re: Chassis Hell
Date: Sun, 13 Oct 2002 09:43:24 +0200
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Organization: EuroNet Internet
NNTP-Posting-Date: 13 Oct 2002 07:43:27 GMT
"Richard Soennichsen" schreef in bericht
> I have a small volume product that alsmost ready for market. The
> software is robust, the hardware is solid, and now I need a chassis. This
> product is for small aircraft and will mount in the panel like a modern
> stereo. That is, The chassis is an alluminum box the slides and locks
> a square sleeve. The front of the box contains a VFD display (2x24), an
> encoder shaft, and a pushbutton switch. I also need to have a plastic
> plate on the front. The whole thing must look clean and professional.
> If I thought debugging the software/hardware was hard that was because
> hadn't tried to do the chassis yet! I am having a Hell of a time lining
> this up, in small quantities anyway. Has anyone dealt with this? Any
> sheetmetal people/connections? Plastic face plate fabricators? Any help
Find a company that has one of these (or similar) machines:
This is common stuff, you should be able to find a metalshop
close to you. You give them an autocad drawing, and that's it.
You can make the craziest shapes and cutouts, thin cutouts to
make it bend easier, all the holes you need - holes that need
to be very precise than be cut a bit smaller, and drilled later.
The placement of cutouts is always very accurate, <0.2 mm or
better. Use alluminium, or plain steel and have it zinc-treated
and yellow-passified. If you want it to last forever, make it
in stainless steel, and have it sandblasted. Your first 25
cases should not have to cost more than $500, in steel.
Then you can place these bushings with screwthread, that
are 'popped' to the metal with a special air-powered tool.
Frontpanel can be made of selfadhesive plastic sheet, again
with the desired cutout for the pushbutton and encoder-shaft.
Can be made in all color combinations, logo's printed, transparent
area for display etc. Not very expensive, the first small batch
of hundred pieces may cost $2000, add a bit more for special
cutouts. Small embossings are possible too, but cost a bit more.
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