20/24/14 sugar/kno3/wax melted the wax, mixed with the mixed powders and put in a tube
visco fuse failed to ignite the comp so a few miniutes with a cigarette lighter and it finally ignited, burned great untill it got blocked with the leftover burned stuff so i squidged it to loosen the spoil and shook it out the end, burned well for a while but blocked again and went slow.
so i tried 20/24/12 as this appeared to saturate the powder but not too much, put it in to a petri dish type tube {3" diameter and 1/2" long} doubled up the visco and tried again, fuse failed again but when i finally got it going it ignited the crappy tube and produced no smoke untill i blew out the flames
so i went back to the trusty if not violent 60/40 kno3/sugar but this time with a baffle of a penny washer glued on to the end of the tube with a glue gun

back to the drawing board and i discovered that the screw cap of a large wkd bottle fit snugly down my tubes so i made more comp and used the bottle lid as a baffle by punchine 4, 2mm holes in the top.
upon testing the baffle did a perfect job until it was melted, and the smoke was THICK. so i am going to try a new version soon with a stronger baffle and maybe 2 with an extended tube giving a cooling chamber at the top
also will try the new wax comp mentioned above how do you ignite it? visco?