Bonus points for interesting formulation proposals.Ī huge thanks to the reader who sent the rosin and made the video and giveaway possible. Just leave a comment below and we’ll pick the recipients tomorrow. If you’re ready to try it yourself, we’ve giving away four 100g bags of flux. The residue can be left on the board, or wasted off with more alcohol or acetone. It barely smokes, it doesn’t smell bad, and it didn’t discolor. Is it any good? Actually, it beats a lot of the commercial flux off contenders. We added just a few drops, but skip it without worry. Glycerin is optional, but is said to prevent the rosin from burning and discoloration under high heat. Starting to thicken a bit, like cooking oil It should be 96%, not lower strength 70% rubbing alcohol. One thing the video doesn’t mention is the alcohol strength. The nearest drug store had both isopropyl alcohol (96%) and glycerin. We powdered it in an envelope with a hammer to it would dissolve faster. Ignoring the Cationic flurocarbon surfectant, everything is readily available.Ī reader donated a kilo of craft rosin, but you can find it a craft and music stores.

Liquid flux is produced using a 20-65% concentration of rosin at concentrations of 65-80% of rosin, a paste flux is produced.

Cationic flurocarbon surfectant (0.01-1% by weight).

Followup comments revealed an expired patent with a simple flux recipe: It’s also the primary ingredient in many fluxes. Rosin is an inexpensive processed tree sap, used on violin bows, art, etc. In previous videos we compared different types of commercial flux ( Flux off 1, Flux off 2), but did you know it’s possible to make a simple and effective flux at home? We’ll get you started, and don’t miss the giveaway at the end of the video.Īrhi shared his method of dissolving rosin into a solvent.

Flux is a wonderful goo that makes soldering faster and easier.

Liquid rosin flux home depot