Date: 12/31/1969 Views: 7607
Date: 03/04/2005 Views: 5695
Date: 10/05/2008 Views: 5943
Date: 08/23/2023 Views: 693384
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