'abstract' wood burning.
I once saw a how-to video, I am 90% sure is was on this site. but there is a chance it wasn't. I would like help finding it again.
From what I remember, the person showing off had: a car battery, a long needle, plank of wood and some chemical.
the process I remember was (but may not be 100% accurate):
1. (s)he painted on a layer of chemical (or acids) on the wood
2. stabbed the needle on the wood
3. connected the battery to the needle
4. turned the battery on.
it then made some elegant, fancy patterns, like a bare tree, or a lightning bolt. lots of 'branches' and paths were burned into the wood (without manual intervention. it was 'natral'). like a chemical reaction.
if anyone has the name of this technique, or a video/instructable/guide, I would really appreciate a link.
EDIT: solution found: it's called "Fractal Woodburning" (go on youtube for some videos). I should have known, I love fractials!
and a high-voltage power source.