> My biggest issue is alignment of the toner pattern for double sided
> boards. The pinch rollers tend to pull the top paper so I had to
> resort to using an iron to tack the paper onto the board before
> feeding it.
>
I have this same kind of laminator. Assuming the packaging is the same
there should have been a sheet of heavy paper included. I took that
paper, folded it in half and put my two sided board inside and solid
against the fold. Leave enough overhang so that when you feed into the
laminator the paper is grabbed first. Keep a tight grip on the paper,
pc board sandwich until board is in between the rollers. If you do not
have the paper I have also used heavy construction paper. Ordinary
notebook paper tended to crumple up rather than coming out the back.
With this technique I have had no problems with maintaining alignment.
This also comes in handy with boards that are too small to appear out
the back side before it has fed all the way through.
I will mention one other thing about my laminator. I did no
modifications and after about a years worth of use the gears have
started to strip. So I will have to replace mine in the near future.
With my boards I generally found it took any where from 6-10 passes. I
also found it also useful with my larger boards to rotate the board
so that different edges fed in first. This helped with problems with
the edges not getting a good transfer.