Mark,
Not to mess up a fun project but--- You might try the toner transfer=20
method whereby you print on special paper with a laser printer and then=20
iron on (transfer) the image to the second surface.

Here is a Pulsar product that has worked well for me for printed circuit=20
work.
http://www.digikey.com/product-detail/en/50-1101/182-1003-ND/3386

This particular system uses a water soluble layer to print on so after=20
transferring it is easy to soak off but that may hurt the wood? I did=20
some experiments with release paper from label stock that did not need=20
water - kinda worked but I settled on the Pulsar stuff for my circuit=20
board work.

As far as optics for your scanner burner goes, perhaps the optics in the=20
laser printer are what you want, replace the laser with a more powerful=20
one of about the same wavelength. If the speed is too high, perhaps you=20
can figure out how to slow the mirror motor. Sound like a fun project.=20
Be careful with your eyes!

Looking forward,
Al Shinn



--=20
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