I've tried Dextrin, NC, NC/NG and Resinox.
I don't feel comfortable corning crackle like BP without some considerable variations in the process. I for one use quite a lot of violence corning black powder, and using a hydraulic press, and clubbing with a metal bar are standard ways for me to reduce pucks to smaller bits, but crackle is known to be extremely sensitive.
Indeed I had a very scary incident with it once. During granulation a quantity of mix had dried a bit and was now blocking a number of gaps in the screen, and smudging more of the dough-like wet crackle mix on it was not pushing it through. The area blocked was a few centimetres square and was enough to bug me a bit, so I decided to clear it.
Scraping it with a piece of metal would have removed it easily but obviously this would be a bad idea even if it was a much less sensitive composition, and so I chose a small stick of soft wood. Scraping the soft wood on it set it off.
I was lucky and the sparks created did not light the rest of the composition stuck to the screen, or anything else. This is a good reminder not to have trays of BP and so on lying around where you are working. It's not hard to imagine how this could have killed me if things were a bit different.
I guess it is best to remove caked on crackle, and other sensitive compositions using a solvent to dissolve the binder, and not even gentle scraping with wood.
However, fortunately one can achieve dense enough dragon eggs just by the standard methods of granulating and gentle tumbling, or if you want mega novelty ones that are really just salutes in the form of a star, by cutting them.
Bluecomet24, I can only imagine that the answer to that is yes! Perhaps the drug cartels have decided to widen their range of wares to include drugs for diarrhea, indigestion, heartburn and nausea as well as the ones they are typically associated with.
Edited by Seymour, 05 March 2016 - 12:16 AM.