I’ve been experimenting with paste flux containers for years, and
have been known to prowl the kitchen sections of stores, always
looking for a better flux container. For a long time I used one of
those glass, rubber gasketted preserve jars with that heavy wire
lock-down mechanism. They would seal well, but was a two-handed
operation to close, and the rubber gasket got pretty nasty after a
Somewhere a while back I found a squat metal capped glass storage
jar ( in Ikea’s kitchen section, I believe) and used that for quite a
while as my alcohol-based flux container. Strangely, on the bottom of
the container was the name of the manufacturer, “BANG”. Somehow I
thought this was not a good brand for a flammable flux container, and
eventually stopped using it… Ikea had a perfect wide, squat-shaped
glass container, which I bought several of, which has a
plastic-gasketed aluminum lid (one handed on and off) which seals
really well, and has a loop handle on the top of the lid, which is a
great place to hold your flux brush. These cost a few bucks each ( a
bargain, I thought), and doesn’t have BANG on the bottom. I looked.
For my paste flux, I just add a little water to it to thin it when
it dries out, but keeping it covered when not being used seems to
prevent it from drying out too much.
The alcohol based flux needs to be replenished occasionally with
alcohol as well, even if covered, it seems.