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Forrest,

OOPS!
Sent attachments instead of URL
Sorry!

http:/www.hacs.com/box.jpg
http:/www.hacs.com/base.jpg
http:/www.hacs.com/top.jpg


I get custom folded/punched metal boxes from my friend in Thailand.
two piece
0.030" thick steel
electrostatic black epoxy paint
white silkscreen legend
13.68" x 5.35" x 1.45"
tooling about $200
unit price about $7.00
100pcs minimum purchase=20
BUT
UPS shipping for 24 pcs is about $120 (25kg UPS shipping box)

Ray



On Sun, 01 Oct 2006 20:44:28 -0600, Forrest W Christian wrote:
>=A0Ray Newman wrote:
>
>>=A0Forrest,
>>
>>=A0Exactly what quantity per:
>>=A0build (or run) ?
>>
>>
>=A0Generally I build about 25-30 of any given assembly at a time, but
>=A0that's more related to how many I can easily fit on the amount of
>=A0workspace I have right now (which will be increasing shortly). =A0 I
>=A0have one unit that I do 44 of (4 rows of 11 fit in the area I work
>=A0with), and another I do 24 of (4 rows of 6).
>
>=A0For the most part, I'd be comfortable actually doing runs of around
>=A0100 at a time.
>
>>=A0month ? =A0year ?
>>
>>
>=A0The unit I sell the most of =A0do about 50/month of on average.
>=A0I've got another product coming which I expect to double or triple
>=A0that.
>
>>=A0More options as quantities rise.
>>
>>
>=A0I realize that. =A0Unfortunately I'm at the low end of the scale, or
>=A0so it seems.
>
>>=A0Potting works the best for VERY low builds if you design pc board
>>=A0with all the connectors on one end.
>>
>>
>=A0Is the idea that that end is "up" in the mold? =A0I.E. you build the
>=A0board such that everything which needs to stick out is on that end,
>=A0then you dunk the board such that that end is still out of the
>=A0epoxy?
>
>=A0My main concern about the potting/encapsulation is things like
>=A0"what happens when I have a capacitor decide to blow apart", and
>=A0"will component X fail (due to heat, or just the epoxy, etc).
>
>=A0I've got a couple of "wart in the middle" type of apps which the
>=A0encapsulation seems ideal for... =A0I.E there's no displays, there's
>=A0no moving parts, just a couple of connectors (and/or cables
>=A0sticking out), assuming that the tantalum caps don't turn it into a
>=A0small epoxy bomb.
>
>=A0That said, I've also got some stuff though which needs a bit more
>=A0interaction (buttons, leds, lcd's, etc) which makes me think that
>=A0potting isn't the end all be all answer. =A0 Not to say I don't want
>=A0to play with the potting/encapsulation since I think it's an
>=A0interesting option for many things I plan to do.
>
>=A0-forrest





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