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Subject: Re: [Homebrew_PCBs] RE: Inkjet photo paper in laser printer - will it melt?

From: Jack Schmidling <jack@...>
Date: 2013-10-15

> Sorry I'm very would up and frustrated after my first attempt today LOL.
>
> Keith.

I know the feeling. I have made two good boards to date and it seems
like playing craps or nailing Jello to a wall. Doing exactly the same
thing twice is nearly impossible when using the iron technique.

Yesterday I made a perfect board after about 6 attempts using label
backing and PnP. The last attempt was PnP and it worked. My previous
good board was made using magazine paper. Removing the paper was a
tedious task that I do not wish to repeat so PnP and label backing are
the only options I am interested in.

I too am thinking about going to the photo process but wanted to give
this a try first as it is so much simpler.

Seems like the major problem is pressure and temp during the transfer
and a laminator may be a good idea but I don't want to invest in
something that I have no other use for.

I started using an IR thermometer to monitor the board temp as opposed
to iron setting and time and pressure. After some experimenting, it
seems like around 300F is a good number for PnP and label backing. It
is pretty easy just to scan the surface regularly to get the actual
board temp than to guess at time and iron temp. There is lots of
experimenting to do here but I have not heard of anyone else doing this
and you might give it a try. It at least takes the guess work out that
part of the equation.

Jack




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