A simple and relatively inexpensive way to get rid of the air and extend the shelf life of finishing products is to use one of those gadgets that remove air from an opened bottle of wine. Most wine shops sell them for about $10 to $20. Just pour finish into a clean, empty wine bottle, insert the rubber stopper that comes with the gadget, then pump out the air. I’ve had urethane in a wine bottle for over a year and it’s fresh as new. Extra stoppers sell for $1 or $2 each
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