- Wed May 06, 2009 7:05 pm
For Stitch-and-Glue, I use roll paper to loft the panels on. I do this so I can catch any lofting errors I may have made, to make sure that each panel section is fair to its neighbor, to minimize waste when laying out panel parts on plywood stock, and to be able to repeat the build easily. To transfer the shapes I punch through the lines with a scratch awl, which is essentially a woodworker's icepick, to make prick marks in the plywood, then play a giant game of connect-the-dots. This scheme has worked so well that I continue to do it on every S&G project without a second thought.
For strip-built projects, I make half-forms out of the thinnest, cheapest doorskin plywood I can get my hands on, although I have learned to select sheets that look least prone to warping. The half forms are made with much care towards accuracy of shape, fair lines, etc., and are used to trace around on the plywood the real forms will be cut from. I do this so I can "archive" the sections for any repeats, if desired, and to assure absolute symmetry of the strongback mold and resulting boat.