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Picture 4 of 7 from Album Searunner 31 Centerboard
New board made by John Prentice of Westport. 3x 3/8" marine grade plywood, laminated with System 3 silver tip, then shaped close to the NACA foil in the plans.  After drawing the grid from the plans, we cut the foil profile in a thick piece of plywood, then ran a skilsaw over the male pattern about every 6", then used a power plane to cut down to the skilsaw grooves.
New board made by John Prentice of Westport. 3x 3/8" marine grade plywood, laminated with System 3 silver tip, then shaped close to the NACA foil in the plans. After drawing the grid from the plans, we cut the foil profile in a thick piece of plywood, then ran a skilsaw over the male pattern about every 6", then used a power plane to cut down to the skilsaw grooves.
Picture Added 17-09-2017 22:02
Added by md7a


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