I tried soldering 26 gauge copper wire to carbon steel using Harris Safety-Silv 45 and this Stay-Silv flux. The microtorch nearly vaporized the copper before it got hot enough to melt the solder and boil the flux. Stay-Brite low-grade solder with stay-clean liquid flux and a soldering iron worked better for me. Note: I'm a hobbyist, not a plumber or electrician. My working area is less than 1 cm2, so redundant. Update, three months later: it turned out that the plastic tub was leaking. It must have arrived with a slight tear in shipping as it has been in the same spot the entire time I have had it. The tub it comes in is made out of very thin plastic, similar to the kind you put dairy products like sour cream in. This material is corrosive and has damaged some of the items that used it. I would put this on a piece of dark paper to check for leaks upon arrival.
Hakko 599B 02 Wire Type Soldering Cleaner
11 Review
π₯ Whizzotech Solder Wire 60/40 Tin/Lead with Flux Rosin Core - 0.032 Inch Diameter for Electrical Soldering (4oz/100g/0.22lb)
13 Review
309LFC-O X .035 X 1LB Spool Gasless Stainless Steel Flux Core Welding Wire by Blue Demon
12 Review
Inverter welding machine CET CET MMA 200A, MMA
23 Review
Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review
Rechargeable screwdriver OA-3,6F (433.0.2.00), 3.6 V, 1.3 Ah Li-ion, blister
46 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