So when working with hard silver, silver can be difficult and the fumes are too strong even with proper ventilation. Probably a good flux for the irony of the copper. I recommend people looking for quality silver flux to get a borax cone instead.
Reversible Mi 16-in-1 Ratchet Screwdriver
21 Review
Bit and socket set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
46 Review
DVR 70MAI Dash Cam Pro Plus+, black (A500S), black
87 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review