I have used Brads dusting procedure for years and have just this one
thing to add as a safety precaution. Talc is an inorganic substance
that will collect in your lungs and will NOT be able to be removed by
natural body functions. In other words, black lung disease. I suggest
using corn starch as a talc replacement both as a dusting agent for
settings and for molds when wax injecting. In a career of ,hopefully
25 to 50 years, even the small contaminations can add up.
My two cents for your better health. Frank Goss