Apologies if this has already been covered, I didn’t find this in any searches.
Does Proofgrade have a recommended expiration/shelf life? My original sample box arrived more than a year ago but I’ve just recently been able to use it. (The closed shipping box has always been stored flat)
On several sheets the masking is flat on one side but wrinkly on the other. I’m sure the GF can cut right through slight wrinkles but has anyone had a problem with that?