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Prior to attaching the blades I also rounded the shaft. First, I marked the shaft as described in Warren & Gidmark's paddle building book using an easily constructed spar gauge (also described in the book). I then, with help from my daughter, planed down the four corners to give an octagon in cross section. We then took down those eight corners to give a 16-sided shaft which was sanded smooth to oval. On Wednesday evening I glued the blades onto the paddle blank using colloidal silica-thickened epoxy and I have since begun to shape the part of the shaft that backs the blade. Ideally, there will be no corners, just smooth flowing lines. The paddle shaft will flow into a thickened backing of the blade. In reality, I'm not sure how achievable this is as the shaft backing the blade is only 1.5" wide, much narrower than the rest of the blade which is 1/8" thick.
After the shaping is completed, the blades will be glassed with 4-ounce cloth on the front, and possibly on the back as well. The glass on the front will strengthen the paddle as well as protect the artwork. I am considering adding some aluminum or copper wire to the edge in order to add a degree of protection since it's certain the paddle will see hard use and the blade edges will take the brunt of that. It's ironic that due to their lesser strength, the paddle must be as light as possible, yet due to their lesser coordination, the paddle must also be as tough as possible.
More pictures will follow soon.
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