Step 9: Glueing and sewing of the fortification for the upper spreader

1. Put the sail with the front side up align with the plan and fix with paper tape.
2. Take the fortification for the upper spreader (trapezium shaped piece of Dacron) and glue this on the marked spot of the plan.
3. Sew the fortification for the upper spreader at 1 to 1,5mm from the border with a straight seam.
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