Hi Rate1
Do you think using 1/64" 3 ply is lighter than balsa sheet, or is it just slightly heavier but are offering other benefits compered to that of balsa sheet?
Methinks if you use balsa sheet, you are going to glass it (0.6 oz.sq.yd) and paint it or cover it with film in which case balsa would be fine. I would prefer the 1/64 ply since I will be less likely to poke my fingers through it. I will, however, research the thinnest proskin first. Can you get hold of 1/64 ply ? you could weigh a sample on your scales to compare.
Since the whole turtledeck is effectively single curvature (conicalish) I don't think there is need to mould it from glass..just go for the formers (or foam) and use the ply or proskin or glassed balsa sheet.
Thanks for the piccy (now I do like that colour scheme)....unfortunately I have to stick with Patty's 1997 scheme 'cos I have all the decals...and a model Patty...and a large modicum of allegience since she remains one of my heroines.
anon