Permanently pliable putty as easy as a drop in the bucket
No matter how firmly I twist the lid onto an open jar of wood putty, it eventually begins to harden up and becomes useless. To cut down on waste, I figured out this way to keep air out of the jar.
Simply fill a paint can or similar container with water and drop your jars of putty inside. Be sure to label the jars' lids with a permanent marker since the paper label will peel off after being submerged. Even if a little water gets into a putty jar, oil and water don't mix—simply pour off the water before using the putty.
—Warren Valente, Plymouth, Mass.