At 03:33 PM 7/30/01 -0400, you wrote:
>
>Really?   This doesnt quite have the "ring of truth" to it.
>I mean.... the entire plated thru process is skipped.
>And I gotta beleive that single sided stock is cheaper
>than double sided stock.

It's both true and not true. ;-) Ommmmm...
If you go around asking
for boards in quantities like 500 or 2,000 pieces from
domestic manufacturers you'll see very little price saving
unless you are in a country where consumer electronics is
made.

Then, going for a single-sided punched board on paper-based
phenolic can be astoundingly cheap, but there is a tool
cost $$$$ to prepare the punch set. There is no drilling, just
*whap* in the punch press and the board pops out, including
whatever outline you can draw (within reason). They can even
punch the outline out and shove it back into the surrounding
panel for easy handling. It's all very low-tech, using
screen printing, air drying (well, maybe UV curing) etc.
Typically these boards are priced per m^2 rather than per in^2 !.

There are a few remaining manufacturers who still
do this for domestically made appliances and so on, but
the tooling cost is very high and they expect big runs.

Best regards,
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Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com
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