Thanks Dave, I like this idea and having battled the same problem for years,
I'm going to try it.

In fact, I think I'll try pouring out the quart size can into pint or 1/2
pint cans, using the screw trick as I open each. 1/2 pint cans are like
single use sizes.

Glenn


"Dave W" wrote in message
...
I have chased this problem for decades trying to save varnish from one year
to another. I have tried collaposable bottles (the problem is the
threads), freon, propane, marbles (what a mess). I am sold on punching (I
use an awl) two small holes in the lid of the can, pouring through the
holes and resealing with a #10 sheet metal screw. Inverting the can
briefly coats the end of the screw with varnish and makes a good seal. I
am convinced that air enters the can through the lid seal after repeated
openings. The screw trick works for varnish because stirring or mixing is
not needed.