Toner Transfer PCB Fabrication

[bjla...@mich.com]

After trying most methods of pcb fabrication I have finally found (after
30 years of frustration) the PERFECT method for making printed circuit
boards. HERE'S WHAT I DID: 1. Clean your copper board with 0000 steel
wool (make sure you get all the dust off afterwords) pcb should be 1/2
inch larger than pattern. 2. Get " Press N' Peel " toner transfer sheets.
Use you favorite Drawing/CAD software to create the artwork . 3. If using
a laser printer to print out the pattern print it out directly on the
toner transfer sheet in a mirror image (solder side only) of your
pattern. If using a ink jet or dot matrix printer , print out in mirror
image and then copy it on to the toner transfer sheets with a photo
copier. 4.get an electric frying pan or grill ( the kind with the plug-in
dial type temperature controller) I use a "Farberware" model 260,, 1440
watts , place the pcb clean side up and put the toner transfer sheet
pattern side down on top of it. Now put another piece of PCB on top of
that (sandwich style) top it all off with a weight, about 1/2 pounds per
square inch of board area. 5. Set the temperature control to 300` F. and
cook the sandwich for about 15 minutes. 6. IMPORTANT let it cool
completely before carefully peeling of the toner transfer sheet. 7. etch
with ammonium persulphate. DRILL AND YOUR DONE.

THE PATTERN LOOKS JUST LIKE IT WAS DONE AT A PROFFESIONAL BOARD SHOP. The
traces and holes are an exact duplicate of your original pattern. If you
use a household iron like they tell you , you get uneven heat and uneven
pressure which results in distorted traces and holes.

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