Firstly we used a spiraling plank to get the measurements from one side of the Gar-board. The spiraling plank is placed on the gar-board side of the frames and on each station a measurement from the chine to the spiraling plank at a known measurement in this case 200mm. The same from the bottom down.
After this is done we placed the spiraling plank on some cardboard and where we made all the chine marks we measured out 200mm out and same on the bottom marks but going the opposite way. after we have all the marks we then used a batten to fair the lines in then cut it out.
We then placed the cut out cardboard on the sheet of ply and cut it out leaving all the excess ply on for we can cut it off at a later date. we make two of these for the gar-board is the same on both sides.
The exact same method is used to get the top sides.
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