depends on the product- many will have a best before date.
If the product is opened however it may only be good for 1-2 months.

If it's boatcote just put it in the sun for a few hours. It's like honey, in cold weather it crystallises.
If there's no sun a micro wave on low will also do the job, but make sure there's no leaks other wise there could be domestic issues!!!!

I've used boatcote for many years, and this time of year, it's common for me to wrap the resin in black plastic and leave in the sun.

If it's not botecoat, try my fix anyway, it might just work.

If it doesn't liquefy after several hours, it may have been contaminated with hardener, if that's the case there's nothing to do but throw it out and buy some more.

decrepit said...
If it's boatcote just put it in the sun for a few hours. It's like honey, in cold weather it crystallises.
If there's no sun a micro wave on low will also do the job, but make sure there's no leaks other wise there could be domestic issues!!!!

I've used boatcote for many years, and this time of year, it's common for me to wrap the resin in black plastic and leave in the sun.

If it's not botecoat, try my fix anyway, it might just work.

If it doesn't liquefy after several hours, it may have been contaminated with hardener, if that's the case there's nothing to do but throw it out and buy some more.

Yep its botecote so I will get it out of the bin and warm it up and see, thanks.

Fantastic, glad that worked.
I've found as the resin gets older it takes longer to get it liquid. With my very old resin, I don't think an hour in hot water would be enough, so allow a little bit longer next time, you may have to refresh the hot water.