It's sort of funny the items I've read about that are used for fluxing. I had never heard of pine knots, sawdust, or resin used as a flux before. Seems everything from Granny's powder puff to Marvelux and horse**** has been used at one time or another. I used a charcoal looking powder many moons ago that looked like granules of black powder called Leadex and it always seemed to work good. anyone else used this before?
http://www.dixiegunworks.com/pdf_dat...oducts_id=8094