Posted by: Geoff Sobering on June 22, 2005 at 16:29:57:
Questino 1: I've heard good reasons for using both 3mm baltic-birch and Okume plywood for the skins and cockpit floor on a DN. Nothing definitive, though. Both are easily availabel at resonable cost, so that's not an issue. Okume is lighter, but might absorb more epoxy (?)...
Question 2: I'm thinking of using using "Verticell" (resin-coated paper) for the core between the bottom skin and the cockpit floor. The choices I have are 1/2" and 3/4" (no 5/8!):
http://www.mcmaster.com/param/asp/PSearch2.asp?reqTyp=parametric&act=psearch&FAM=plastics&FT_138=117616&FT_101=46159&FT_2362=104751&FT_518=52165&FT_130=1629&session=plastics,138=117616,2362=104751,518=52165;101=46159;130=1629&sesnextrep=514160738787947&ScreenWidth=1280&McMMainWidth=918
I'm hesitant to make the cockpit shallower than necessary, so I'm thinking about using the 1/2" material. Will this cause problems (strength or stiffness?). The best alternative seems to be the "to plans" 5/8 x1/4 inch listings.
Any thoughts/suggestions?
Cheers,
Geoff S.
US-5156
http://geoff-s.net/wia/