Unfortunately, when in between fiberglassing projects sometimes left over polyester resin will begin to harden before I can use it on the next. I can't keep it in the bucket because I'll need it to mix up the next batch. What to do?
I found I can dump the left over resin in a damp spot of the gravel driveway. The combination of the thickened resin and water in the soil prevents it from seeping into the ground. Several days later I pick up the hardened blob off the ground and put it in the trash.