Thanks Nobade ----
the black damp dough has yielded a pile of black worm-like spaghetti
its rather large --2 mm thick strings --1-2 cm long
but they dry easily ---crumble into pellets --like bat guano --or lizard droppings
see fotos
however --a light crushing in a wood mortar --& much sieving --yields a variety of conical granules
AND THE IGNITION IS INSTANT!!-----
will keep on till a uniform 0.5 mm is obtained - grateful for the help
Flasman