Date: 12/31/1969 Views: 43321
Date: 07/27/2004 Views: 5681
Date: 12/31/1969 Views: 4024
Date: 08/23/2023 Views: 789778
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