Homebrew PCBs

I've a combination of Samsung ML-2010 laser printer / Xerox 1910 
laimnator and Sears catalog paper that has been working well for 
Toner transfer, that is until I refilled the toner with a generic 
toner. A new cartidge costs about $80, refills $6, a new printer $60 
after rebates.  The results were pretty spotty.

I tried (again) a number of papers, including the Staples basic photo 
mentioned on the list. Unfortunately, the Staples Basic Photo paper 
actually laminated itself to the pcb and was worthless.

As a last resort, I dug out some "laser foil". Laser foil is 
availible at stationery stores. It is similar to the green stuff that 
is used a protective coating in the press and peel sponge process. I 
attached a small piece to a carrier sheet and printed directly onto 
the back side of the foil.

I then ran the foil, toner side down, through the laminator. After 
cooling, the foil peeled off easily and cleanly. I then etched the 
boards in muriatic acid. H2O2. The traces were very good.

I'll definitely continue with this process.

It is another technique to add to the list.

Myc