Kevlar makes cutting and shaping a real pain in the butt. For a small project like that there is no reason fiberglass won't be sufficient.
I would suggest foam insulation board from a home improvement store. A 2" thick 4x8 piece would be good for a couple different tries. The high density stuff is great for sanding and shaping. It usually comes in blue or pink. Don't use the white stuff that looks like it was made with a bunch of beads. 4 layers of glass is probably sufficient. Consider a stitched fiberglass product like that in the link below. http://www.fibreglast.com/product/saertex-1200-gm2-stitched-triaxial-fiberglass-2808/Stitched_Fiberglass If its too boyant then you can add lead to the lower portion. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Mar 11, 2015 12:04 PM, "Brent Driedger via CnC-List" < cnc-list@cnc-list.com> wrote: > Good day folks. > Last year I was gifted a tired Bombardier Invitation 3.8. With a little > TLC I'll get her sailing agains but the boat came without a daggerboard. > I'm going to make a composite one. Two questions. I've scoured the Internet > for a design detail of the board but have come up with nothing. Does anyone > have any links they know of or information that could be helpful? Second, > for the composite masters, what would be the best core choice and layup for > this project? Will fibreglass be fine or should I go with Kevlar? > Thanks. > > Brent Driedger > 27-5 > Lake Winnipeg. > > Sent from my iPhone > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > >
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