Straightening particle board panels

I use 1/8" ABS to make door panels and seat back pieces Lincoln 60's to 70's and Porche door pockets, nice money maker for me!)for my boss for his interior business. I'll be making duplicates of the backer board for the dart,plymouth door panels (number 6 on the list) But my darned glove box project is holding me up.
seat back for a 64 Lincoln Since they are ABS these panels won't degrade at all if not left out in sunlight(or even in sunlight for many years)
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cutting the door panels
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and last but not least is the ABS door panels for his lincoln
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