Brian has already made this duct from fiberglass.
I'll give him a head's up to bring one out sat.
The piece of duct he is re-creating weighs apx 2.5gms (depron). His first attempt in glass was over 10gms, his second one was 10gms and he has one curing in the mold which has carbon reinforcement over lighter glass cloth which he is hoping to hit in the 6gm range. Brian has offered to donate this light one to the cause and one of us will bring it out for you on sat am.
I called Marcos and he was to get a very limited few aluminium spinners to test......might be persuaded to part w/ one??
