Crackling Stars
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Summary
Hardt recommends a 60 mesh (50:50) MgAl however, Mike Swisher uses a 100 mesh 50:50 with this formula. Regardless, mix with a 10% solution of nitrocellulose in acetone or amyl acetate to form a dough and make into small cut stars, then break apart. What is retained on 18 mesh and passed by 8 mesh is retained for use in a matrix composition. Hardt pg 172