/diy/ - Do It Yourself

Has anybody used this? I want to tin my circuit boards and this and "liquid tin" are pretty much the only options, but I don't want to spend 23$ on a 125ml bottle of liquid tin.

The instructions call for dissolving it in lukewarm water and letting the boards sit for around 5-30 minutes.

It's much cheaper than liquid tin, but so far I haven't seen anybody using it.