I have been using Autotrax* 1.61 to design PC boards for my
own creations for a few years now, ever since it became available at the right
price (free!). Before that I used Easytrax* and way in the past I used Bishop
Graphics tapes and pads.
LIGHT BOX CONTROL TIMER
Fig.1: the light box controller is built on two PC boards and this circuit diagram is split in two vertically, each part containing the contents of one of the boards. They are joined by two short cables, one 4-way and one 12-way, which plug into connectors 1/3 and 2/4 respectively.
That at least got me a PC board artwork. Now the challenge was
to convert that to a PC board.
I tried using "PressnPeel", a photo-sensitive film which
transfers a toner direct to the PC board surface using a hot iron. This then
acts as the resist for etching.
However, despite the glowing reports I’ve seen on this product
on the ’net, I found it had its limitations.
First, the blank PC board must be extremely clean for the toner
image on the film to stick to it. Second, if the PC board artwork is quite a bit
larger than the iron then it is hard to get the blank board up to the correct
temperature all over for the toner to stick again.
Quite often you would pull away the film only to be left with a
result where, Dalo pen in hand, you would have to repair the pattern as best you
It wasn’t a very satisfactory situation and to make matters
worse, PressnPeel at a retail level adds quite a lot to the finished board