Date: 12/31/1969 Views: 4191
Date: 08/11/2009 Views: 6987
Date: 07/18/2008 Views: 6244
Date: 08/23/2023 Views: 805436
12 more plies, (3 at a time), were laid up on the top side. That's an 18 ply layup! 1 BID is about the same thickness as 3 plies of thin model aeroplane cloth. Y10-09-30