I have been taking my pnp to my local lazerquick photocopy shop and
the copies have always turned out nice and black
About four months ago, I had some done, and when I received them
they were the same nice black color. I got busy with other things,
and stored them away. To my surprise, when I looked at them today,
and the toner has turned to a gold color. I never had this happen
I asked the people at Lazerquick whether they had changed the toner
they had been using, and they assured me that they had not.
Could this be due to the fact that I did not use them immediately?
Does the toner on PnP have a shelf life? Or, could it be that the PnP
itself has a shelf life.
I plan to test one by making a trial etching using PnP with the gold
colored toner to see if it is still good, but before I did that I
thought I’d ask if any Orchidians have had this experience.
Found out that Radio Shack is no longer carrying Ferric Chloride.
Was going to order some from a chemical supply place, when I learned
that many of the people who make etched circuit boards no longer use
Ferric Chloride, but use a home brew mix of Muriatic Acid and
Peroxide as it is much cleaner than the Ferric Chloride, and etches
faster. Have any of you used this mix?