RE: CA MODEL ONAS BUILD
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the included former for the ventilation holes, (this former improves ventilation and add strength to the fuse) is made of 3mm plywood, I will replace it with a 2mm balsa with 3/4oz glass on both sides, also I included an extra former made of 1/8 lite-ply to eliminate any twist possible in the fuse. all this is lighter than the original former.
then saved some weigh by reducing the canopy frame on the fuse.
pics.