his a good friend of mine, Mike, DragonFlight on the these forums.
Helping out with some of the prep work on the body tubes...
Ok so your face wasn't as black as mine
Tube before it's first polish coat..
it's looking pretty sweet... this tube is the mid section.
While Mike was busying rubbing black carbon all over his face...
I finished getting the fins laid-up with the 4 outer layers of carbon (2 plain weave and 2 twill)
the outer layer were laid on, then compressed in between dense foam layers and wood back boards.
as you can see if gave a as good, if not better finish than vac bagging.
Fin lay up is extremely strong, can not flex the fin by hand in any direction.
Total Layup (sandwich) was in this order;
Layer 01. 0 / 90 - 2x2 Twill
Layer 02. 0 / 90 - 1x1 Plain Weave
Layer 03. 45 / 90 / 45 - Birch 1.5mm Ply Wood
Layer 04. 45 / -45 - 2x2 Twill
Layer 05. 45 - 3K Uni Directional
Layer 06. 0 / 90 - 2x2 Twill
Layer 07. -45 - 3K Uni Directional
Layer 08. 45 / -45 - 2x2 Twill
Layer 09. 45 / 90 / 45 - Birch 1.5mm Ply Wood
Layer 10. 0 / 90 - 1x1 Plain Weave
Layer 11. 0 / 90 - 2x2 Twill
Total thickness ~5mm
I did start to sand the fins also, and the leading and trailing edge have come up like razor edges.