> Thought about toner for a laser printer/copier? Laser would do
> something to that surely, melt/burn and fuse into surface of wood

Now there's a thought.

Ways this could work -

Print in reverse on carbon/black paper and scan the entire back
surface. The heat will go right through

Coat the wood with toner powder. Messy, but perhaps not too
invasive. I have a jar of it from a dismantled big office copier,
been hanging around my shed for years

Throw nothing away !!!

Print in positive on (the thinnest ?) of white paper and scan. The
heat attracted by the plastic might be enough to burn the paper
and let the melted plastic drop onto the wood

Next time I'm at the bench I shall certainly give those a go.

To save time, a line-following algorithm would be preferable as
I measured burn time directly on wood as a couple of mm per
second. It had already occured to me that a 1mm raster scan of
an A4 would take quite some time, several hours in fact. A black
target should be some bit faster than that and time will reduced
considerably if it's not wasted lasering white areas

Joe
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