i'd like to know also as it is available at the local wally mart.. hmm..microwave add graphite powder and viola?! maybe?Which brand do you have?
sanch: i've fiddled with stuff like this. i'd advise skipping the graphite. better to use black oil paint that artists use. don't use acrylic ( it's water-based), use the oil type found in toothpaste type tubes. or, maybe better yet, if you have any sirchie, that should work even better. i ended up with way too much graphite, and it got kinda gunky. problem is. you have to work up a batch slowly. i failed to do this. as a result i spent way too much time trying to reclaim a botched batch.