have acquired several hundred sheets of print plates, these aluminum sheets mic out at .012 plus or minus, they seem fairly soft & bend very easily and can be easily straightened. Question is? has anybody tried these for gas checks I have recently purchased new PM 44 &45 dies and really don't want to destroy them if I can help it (I'm known for that sort of thing around here) should I be annealing these if so how much heat and how long? If it will work I have probably got 25 lifetimes supply. suggestion and info would be a huge help.