Dude! Awesome! How do you make these "gray scales"/"shades" into wood? With the stuff I make I am limited to black/white I/O. I thought you had the same problem, of course I know that with the right amount of heat you can roast wood to a certain amount of "color". Do you use the same technique as the the newspapers to create gray scales?
Man I don't think the people here are knowing the media you are using.

I use this chineese guy http://pyrography-fireart.ru/publ/p.....sadka/3-1-0-13
There are different ways to make colour gradation. This work is just a study, so I ised different ways. And yes, I tried some sort of typing like printing with dots. The technic is: the faster you burn dots, the lighter they become. And, of course, I tried to make lines of dots, when I burn hair, just to give them direction.