2012년 2월 29일 수요일

Keel-laying(29022012)

I should have brought my camera with me...We installed cleats on the hull bearer while the other guys were standing the frames for the deck up but especially frame 11 has bulkhead so we take it off and lofted. What we had to make sure is mould style and related planking thickness. Hull has female mould and deck has male mould but what we missed is that the hull frame has sheer line on itself, which we thought that it was topside. We are going to modify the lofting on next monday.

planking thickness
hull(western red cedar) 8mm
deck(high density foam) 15mm
transom 8mm
cockpit sole 15mm/side 8mm

frame 7 has two frame one of which for cockpit and another one for cabin room hatch. They hav 7 or 8mm gap between them in order to get enough space to lay down the material for cockpit which is foam and we have to make sure to have offset from the station line. We won't have cross spall but we've got temporary braces at the up corner of the frame on each side. Bevel is needed with the change of shape otherwise it will have ding on the braces and unfair line, which is not good. Lance and I had spare time so we lofted the girder which is suppose to be unnecessary at the moment. Jumping into AutoCAD and sort out the information we needed, canoe body, any waterline and starting/ending point of cockpit. Girder has flange on it which is going to be made with 2 layers of fiberglass.
We laid the first planking down today. It has a name 'Keel-laying' in shipbuilding industry and means to be quite a big event which means that the construction really started. Laying 2 strips having same figure on bothside of the centreline, we used epoxy(west 403) on them. Our goal next week is finishing the planking of hull, starting from 2 strips on the chine. Foam haven't arrived yet so we might work on the deck 2 weeks later.

how to use paper tape instead of using clamps
1 tiller 2 rudder
clearance hole/pilot hole

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