[vettestr]

Larry,
Mr B. hooked you up with foam and another option for you is sheetmetal. Use spots of hot glue like rivets on inside or overlaps so finished part is cleaner. A little automotive wax makes plug removal a snap. Posterboard or even file folders work but will stick to your masterpiece, tear loose and hit with another layer of glass as you just want the shape 1 time. Jeff C