--- In
Homebrew_PCBs@yahoogroups.com, "javaguy11111"
<javaguy11111@y...> wrote:
...
> >
> 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.
I'll give it a try. thanks. I leave about a 1" border on the paper
so there I can pull the small boards out. I've not had any problem
with the paper getting caught in the machine.
>
> 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 saw about 5 mils of misalignment before I started tacking with the
iron.
> 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.
Yeah, I flip my boards over for each pass. I took careful notes of
my first 5 attempts. On the 64 mil stuff, 12 passes wasn't enough
and 16 had some lifting of traces but 20 did it. I wonder if they've
tweaked the design or its normal variation in manufacturing.
What kind of pcb material are you using? I'm using 0.064 FR4 1 oz