You've probably seen a Graeme Priddle piece that has some pyrography / wood burning on it. If you've seen him actually do it you know it's not pyrography - but more like Wood Vaporization - a flash of light, a puff of smoke - repeat - carefully. And he ain't using no itty bitty 1 or 2 amp power source - oh no no no. Think "10 AMP battery charger" - with a little internal reworking.
And if you've seen him demo his not so little beastie you go home thinking "I'm gonna make one of them things!" - visions of vaporizing wood dancing in your head. Then you go home and try to remember all the details he mentioned - and try and figure out how to fill in the stuff he overlooked mentioning. Then the idea get's put on the "Someday I'm Gonna" list.
Well Someday may come a little sooner with the help of Phil Royal's helpful how to in the 07-2008 Silicon Valley Woodturner's newsletter.
Click here, scroll down to 07-2008.pdf and check it out