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Notes
The lines on the plans reads to the outside finish. I subtrate a 1/2 inch whis is the thickness of the planken. When I
trace the full size lines on the Mylar I used a small peice of plywood to "offset" the lines. When the molds are in place and
the planking is finished the hull will match the lines on the blue prints
5 The lauan patterns are then cut out with a jig saw to about a 16th of an inch to the penciled lines.
The hand sander with a good girt papar will take the rest off nicely. Check for fairness by eye and adjust if needed. Compare
the finished pattern to the mylar and then mark the station number (ST.5) etc., and make sure the measurement from the center
to the outside is easy to read.
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1 The next part is to draw the grid on
a platform. The platforn is a large table top "so to speak" in this case I used two 4'x8' 3/8 birch plywood and 1"x2" stretcher
frame between the two sheets to make it stiff.
The lines ploted on the blueprint copies makes it easy
to plot the lines on the full size board which at this time I had ploted a full size grid.
2 Now there is a set of dots to repersent the
lines of the hull were they intersect with the grid on the plans. I then take a batten that has push-pins in it and connect
the dots. Once it is set to my liking I trace a long the fair curve.
3 Mylar is then layed over the platfom. I then trace with a thin black maker the lines of the hull.
Lauan is the choice materal to make templets. Lay the Mylar over the lauan and prick with a sheet rock screw along the traced
lines every inch or so.
4 Useing a batten and a pencil make a fair curve from the series of dots made by the
sheet rock screw. Measure the distance from the center line to the outside line were the gunnel will be and write it
on the pattern so it is there for reference.
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Taking the lines from this size to a full
size is a trick with smoke and mirrors
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lofting
Lofting is a process of translation of the lines
on the blue print to full-size lines on a "platform". Mertic measurement helps to make this proceess easy.
I note with an expo pen on the laminated
blue print copy each point of the lines intersects with the grid provide on the plans.
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