ORIGINAL: pmw
I have tried thinning with acetone, but it was only marginally successful. Not worth the trouble. I always store my CA's in the freezer. The lack of moisture will let them last alsmost forever.
Paul
Another great way to store them is if you have a food saver vacuum sealer. I just seal my CA into a vacuum container which sucks all the air out. No moisture and it won't ever go bad.
Ken