Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, David McNab <rebirth@...> wrote:
> Result - after just 2 passes through laminator, I have a spotlessly
> perfect transfer, and the paper just falls off.

A couple of notes I should add here.

I did some experiments with a cross-hatch pattern based on 4mil traces.

With one pass through the laminator, the traces end up slightly
thinner than the original. With two passes, they end up a bit thicker
than the original.

I've collated the results into a single image, which compares the
original artwork, the transferred toner and the etch result. Note that
this was 1 pass through the laminator.

Check it out: http://tinypic.com/view/?pic=3zjazjr

The overall result is that (for me at least) the label backing paper
offers the quickest, cheapest, easiest and most accurate medium for
thermal toner transfer.

For fine work, there are two choices:

1) Use thinner traces with more spacing, do 2 or more laminator passes

2) Use thicker traces with good spacing, do just one laminator pass.

Cheers
David