Date: 12/31/1969 Views: 4848
Date: 12/10/2009 Views: 5206
Date: 04/07/2006 Views: 3167
Date: 08/23/2023 Views: 105300
Date: 05/23/2007 Views: 537368
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