Homebrew PCBs

> fredbutz wrote:
>
> I've been using the laser printer method and
> ironing the transfers on to single sided
> boards with no problem.
> 
> But now I want to do a double sided board.
> 
> Does anyone have any suggestions for lining
> the sides up?
> 
> I'm lucky if I can get a single sided board
> to be square, normally things are slightly
> cocky.
>

Many many moons ago when I did punish myself
with toner transfer I did double sided as
such.

Transfer Toner to one side of board only
spray a good coat of varnish on back side
spray a good coat of varnish on the back side
    of the PCB as well (Sorry could not resist
    that joke)
Etch the first side
Remove varnish and toner
Drill 2 registration holes
Line up 2nd transfer paper with drill holes
apply heat/iron/laminator to transfer toner
Spray varnish on already etched side
Etch second side
Strip again

It's not fast but it got everything lined up
nice.