You could try to run each card through a hot laminator (setting on 5 mil)...but run the card
in the opposite way of the bow. So if the face side bows upwards, towards the face, put it
in the laminator with the face side and bowed ends 'facing downward.'
In other words, the 'bowed ends' should always be facing 'downward' as you put the card into the laminator.
and the laminator will heat it and it should come out flat...
While the card is still hot/warm, place a heavy book on top of it and leave it till it cools
down totally (about 15 minutes).
It helps to find a smooth hard surface that is cool to place the card on, like a piece of tile.
My round oak dining table has large titles inset into the top and I place my cards on the
tiles for cooling and pressing, after hot lamination treatment for bowed cards.
Note: I have used all types of self-laminated cards with this method (even 1.3 mil lamination)
and it does not hurt or melt the cards to be on the 5 mil heat setting.
I think by
're-heating' a card, it actually heats and stretches the fibers and the lamination
and you are
're-shaping' it and then by putting on the heavy weight of a book, etc. it
will then retain the new shape as it cools. At least, this has been my experience with doing this.
I use the cheapie 'purple cow' combination hot/cold laminator and set it to the 5 mil heat setting.
You can buy it though amazon.com. It works like a charm...you can even do 3 cards at the same time!
Note: You can experiment with the 'extra' instruction cards that sometimes come with a deck.
Other ideas:
1. I think it was gregory that suggested using a clothes iron (...in another thread for re-heating
the lamination to make it stick better on the card).
Well, maybe a clothes iron would work for bowed cards as well...IF you are VERY careful
LOL
2. Make yourself a LARGE flower press using 'peg board' so you can easily adjust where you
want the four end screws/bolts with wing nuts ...I saw these on Etsy but they might be too small.
for ideas, you can see them here:
http://www.etsy.com/search/handmade?search_submit=&q=flower+press&view_type=gallery&ship_to=US
tarotlyn