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Combiantion Flux and Fire Coat Preventive
Cupronil works best as a fire scale preventive on sterling silver, but it can be used on all non-ferrous metals. Cupronil is a combination flux and fire scale retardant. Anti-flux inhibits the flow of solder to unwanted areas. Contains copper, potassium, sodium borate and boric acid.
To use, apply a smooth even coat of cupronil to the warmed metal using spray or soft brush. Heat metal until cupronil forms its white haze on the surface. Touch up areas not coated. Solder as usual, pickel as usual, rinse and polish. For best results, stir before using and keep container closed when not in use.
Same day shipping! Received it next day (I’m in the same state, but still!!)! Thank you!
This is a great product. You'll need to get a fine mist sprayer to spray to help prevent fires scale. (A sample size of hair spray that is emptied and cleaned out works great). I was taught to spray my solder (I use wire) works as flux