I just purchased $50 worth of card Game sized FFG sleeves for a recent purchase of Thunderstone. I later found out on the boardgamegeek.com forums that FFG sleeves dont quite fit into the provided game box. I waited for my order anyways, and when I got it decided I would attempt to make it work. I opened up a packet of sleeves and sleeved a few cards. I then measured the size, and determined if I carefully cut out the side lining to the Thunderstone box I would be able to get the sleeves to fit perfectly. So thats what I did. I was very careful not to damage the outer box and to leave a nice inside finish, ensuring the cards wouldnt get damaged. Happily, I sleeved the rest of the 50 cards and then busted open a new packet of sleeves... thats when it happened.
The FFG sleeves are NOT uniform in size, AT ALL! The new package of sleeves are about 1/4th of an inch LONGER then the original packet of sleeves I opened. To most people, a 1/4th of an inch is nothing.. but that was enough to make the sleeves not fit into the newly adapted box. I busted open another packet of sleeves, and they too are of the longer type.
So what am I left with? A gutted Thunderstone box and a bunch of mismatched card sleeves.
Posting this mainly to let off steam and as a heads up to anyone looking to buy uniform card sleeves.