Homebrew PCBs

> I'm in Chicagoland.  It's the same magazines I've always used...Elektor
> and
> Circuit Cellar. Actually this one was with Circuit Cellar. I wonder if
> they
> changed something?


They may have gone to uncoated or a lesser quality paper to save money.
Might have changed ink formulations too.  Older inks used to transfer
easily, eg newsprint, buy even that stopped after they went to soya-based
inks.

The coating is a clay called kaolin, Google brought up a few articles about
recent price rises of 5%-10%, so they may have switched stock.

You could measure that page thickness (paper is about 0.1mm (say 4 thou)) or
compare weights between and old & new magazine.

Tony