Thwarts
Thwarts | |
| The hanging frames were fitted to the deck beams, the top of the frame shaped to fit the deck beam. | 
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| The thwart was fitted across the hull. A helper is useful if you don't want to do 100's of laps around the hull with both ends of the thwart moving every time you try to move one end. The hull angles are fairly close to being parallel with the thwart so very small amounts of wood were removed from the thwart when shaping it to fit the hull. | 
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Two knees were made to support the thwart at each end. The aft knee is at the position of frame C, the offsets on the plans were be used to make the knee. The dimensions of the second knee were determined by test fitting the first knee and measuring adjustments to the offsets.
The side decks fit over the top of the knee. Carlins, fitted to the side decks fit into the knee. The side decks are not horizontal so the carlins are at an angle to the vertical, the knee needs to be wider to accomodate this. I missed this detail so had the pleasure of making all 4 knees twice. |
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This picture shows how the position of the thwart relative to the datum was determined.
A length of wood was laid across the floors, another length was clamped across the centre board case.
The floors are a known distance below the datum, the height of the wood across the centre board gives a height above the datum allowing the position of the thwart (relative to this)
to be marked on the hanging frame.
The thwarts were dry fitted to fillets fitted to the hanging frames and frame D. |
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| Once the position of the thwarts was marked on the hanging frame the frames were removed and cut to shape. After requisitioning a number of household items including dinner plates and cake tins I settled on using the workshop bin as a template for the curves on the hanging frames. |  |
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Both hanging frames were cut to shape. My nephew Thomas helped me glue them into place.
The thwarts now need rounding over with the router except on the sides that come into contact where the thwarts overlap. Before the thwarts and knees can be glued into place the side decks and carlins need dry fitting to check that everything is right. |
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The knees were shaped to fit the carlin. Where the knee fits against the carlin the wood is quite thin and care is needed when fitting the carlin to avoid damaging the knee.
Once the knees, thwart, side decks and carlin had been dry fitted they were removed and then glued and screwed in place. |
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The side benches were fitted to the hanging frames, thwart and frame D.
Hardwood trim was fitted to the top of the centreboard case. A piece of douglas fir was fitted to the transom so that there was something solid to attach the transom gudgeon to. |
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Hardwood knees were fitted halfway between the thwart and frame D to support the side benches.
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