--- In
Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> --- 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
I am using .064 FR4 1oz as well. I use PNP Blue for the transfer. I
use 30gauge wire with a .015 bit for most through holes and have had
no problems with getting a good enough alignment. When I align I use a
small light table and a microscope.