Thursday, October 7, 2021

Joining hull bottom panels, filling transom holes, scarf joints, and cutting to shape.

Let's go back in time to my first time working on the tugboat in 7 years: Aug 5-10, 2019....

After a few too many years I finally got around to pulling out the hull bottom pieces.  I sanded them where I epoxied the scarfs, and laid them out for joining together with epoxy.  I'm now using the West Systems 105 resin along with the 206(slow) and 205(fast) hardener.  When joining the pieces, I laid the scarfed sections over a piece of 1x6, added the wood-flour-thickened epoxied to the joint, then screwed it down.  You can see in the picture I used vapor barrier plastic and a piece of mdo plywood on top to sandwich and screw down the joint. I also used some weights on top for good measure.  I let the glue joint sit for a day or two, then I removed the screws and plotted out my shape for the hull bottom.  The pics below show the finished shape, rounded corners, and V-shape cutout in aft planing surface to allow for the outboard. 

I also filled the holes in the transom that were left from the screws used in the clamping/molding process, and skimmed over the scarfed sections of the hull bottom.

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