Zerp 1 Thought it would cure a bit faster than it did.NOTE: That was my original comment. After trying several batches, it is my opinion that this product is next to useless. I mixed a small batch yesterday (approximately 4g total) and after 24 hrs in my living room it is still not fully cured. Granted, the temperature was rather low in this room from 1a.m. to about 9a.m. but the batch was kept at about 23C for about 10 hrs prior to 1a.m. at which time it was still fluid.Unfortunately the return window closed before I fully understood the severity of the problem. This stuff is next to useless. You have been warned!!