issues with my potassium nitrate sugar mixture
i have a 65-35 and everything is powdered like it should. however, every time I try to test it or light it it refuses to light keeps going out and burns slowly and the sugar visibly melts on top. The potassium nitrate was in bead form so I did re-crystallization in the oven at 200° with just potassium nitrate. I'm using commercial powdered sugar. after I burn it, it's also leaving this clumpy black residue. Any reason why? delete if not allowed in the sub reddit