New process for PC Boards

[Bob Zimmer]

The November 1997 issue of Electronics Now magazine has an article on a new
(?) method of making PC Boards.  It uses sheets of 1 mil copper foil.
Summarizing the article, you would print the pattern onto the foil using
software and a laser printer, then etch the foil using Sodium Persulphate.
When done, you have the copper traces on a plastic backing.  You then glue,
using spray adhesive, the copper onto a pre-drilled perf board and presto,
you have a printed circuit board!

Seems that the company that makes the copper foil used to only sell it to
businesses in 24 inch x 100 foot rolls, but is now offering it in 8.5 inch
x 11 inch sizes in small quantities.  Prices would probably be comparable
to pre-sensitized boards.

Has anyone ever tried a method like this???



  >=== Bob Zimmer -- Phila, PA     bzimmer at voicenet.com ===<
  >===         http://www.voicenet.com/~bzimmer/        ===<
  >=== "Oat-bran noise is more likely to be an issue in ===<
  >=== situations where cereal data ia concerned [:-)]" ===<
  >===         Analog Dialogue - Analog Devices         ===<