Perfection Plus two part clear polyurethane "varnish" is a tough, rather elastic coating and is working really well for me over West 105/207. Up to a point.
Perfection Pluscomes in a one quart package, to be mixed 2:1 by volume. Part B, the "hardener" comes in a re-closeable can with a screw top. When coating small parts, I often use small amounts and always re-close the containers promptly. However, the Part B goes off, turning solid in its container if I try to store it for three or four weeks while working on other projects.
Part B is only offered in combination with Part A. At $85-$105 per quart. I now have surplus Part A and no Part B; can't find a way to get Part B alone; it's tough to face discarding the unused Part A.
Anybody know how to source more Part B alone? Anybody know how to store opened Part B without it going off? (I've tried other closed containers, storing it in the dark and "Bloxygen" air displacement. None of these efforts had any discernible effect.
Is this an oxygen "cure"? A UV "cure"? A moisture "cure"? I can't find out what triggers the stuff to go off. The mfg. site offers no information on point.
I'd hate to give up a really good product because
- (a) it's really expensive to begin with, but - barely - worth it; and
- (b ) it's much too expensive when half or even more of the quart is lost and unusable because Part B can't be stored after opening.
Any help would be appreciated.