Did you know that resin does not like the cold or the damp!
Is your resin taking longer to cure?
Is your resin drying cloudy or with what looks like an oily residue!
It is best to work in a warm environment where the temperature is above 20°C, resin needs to be above this temperature during the drying time as well as in storage.
For the drying/curing time:
Clear a shelf in the hot water cylinder, put your project in there for the evening/day, cover it with a shoebox as a dust protector