PNP Blue

[Bob Zimmer]

As mentioned in a previous post, I had emailed the vendor Techniks
(http://chelsea-ios.com/~techniks/) for a sample sheet and found it to work
just as I wished it would.

I used EasyTrax to print the PCB layout on a piece of paper, cut the full
sheet into a sheet about 1" larger than the needed size in both directions
and taped it over the layout.  I then ran that through the laser printer (my
old HP IIP) reprinting the image on to the PNP sheet.  Cleaned the board
with a scouring pad, ironed it onto the board, positioned just between the
first two steam settings and got nearly a perfect image. I lost only a small
portion of the board edge outline!

By cutting the sheet down, I should be able to make 4 boards from each
sheet.  I had ordered a number of blank double sided boards from Electronic
Goldmine.  QTY 10 for 4x5" boards was about $.80 each!

I later tried another board and again got perfectly usable results!

Called them up and just ordered 40 sheets ($50.00)!  Should be set for a
long time!

This makes the cost per board (not including time and etchant) at about
$1.15 each.  Only downside that I can see is having to completely etch the
copper off the second side as I'm only doing single sided.

This beats anything I've ever used before!

Bob

  >=== Bob Zimmer -- Philadelphia PA ===<
  >=== bzimmer at voicenet.com          ===<