Sometimes this stuff can be hard to find: I was visiting my local Lowes on Semoran at Lake Margaret and noticed that they had two palettes stacked to the top with Dow Protection Board, Fan-Fold-Foam. This isn’t the classic BlueCor-which is extremely difficult to find and has an onion skin on both sides, it is the single skin variety. I think the price was in the upper $30.00 range for a bundle of 50′.
This is the 1/4inch (5.5mm) thick variety, perfect for airframes!
Grab it while you can, folks! [..chris]