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Default Removing battery corrosion

On Monday, 12 February 2018 10:41:52 UTC, wrote:
On Sun, 11 Feb 2018 17:41:13 -0800, Jeff Liebermann

What were you trying to make? Soldering flux (usually a mix of zinc
chloride and hydrochloric acid)? Don't use it on electronics as it's

That's acid plumbing solder for copper pipes.

But you brought up a question. Electrical solder is rosin. What exactly
is roisn and how does it work for a flux? Is it the same thing used for
playing a violin, which as far as I know, is made from pine tree sap?

that's what it is. Just take pine resin & heat to drive off the volatiles. You can get 25-50kg resin per tonne of wood pulp, but only from pine. Spruce gives less.