Re: Toner Transfer

> You have to use the right amount of heat.
>
> Too little, and the pattern doesn't stick.
> Too much, and you can melt the plastic and 'blur' the toner.


I built a dynamite toner transfer press out of a waffle iron.  We had
one that has a 9" x 9" grid and a steel case.  The waffle grids were
reversible, have a smooth side a a waffle side.  I put the smooth
side up, and machined off the edges so the two hot surfaces will
touch.  When I do a board, I place it in the waffle iron with the
toner transfer paper between some paper towels.  I then close the lid
and place a couple of bricks and a 35 lb chunk of steel on top, for 2
minutes.  I take off the wieghts, burnish the toner transfer paper,
then press it again for about 6 minutes.  The heat control is cranked
to about 400 fahrenheit.

I have had relatively good results, but not as consistent as my
results with photoetching.  I still drip traces every once in a
while.


Best Regards,

Lawrence Lile