Jul 18 2009
Pitfalls Upon Pitfalls and Inner Awakenings
The more I move forward on my dory renovation project, the more apprehensive I get about making costly, irreversible mistakes. I am reading as much as I can on the web about boat building and wooden boat restoration, but it is all taking a while to really set in. Like this past week, I was doing my first bit of serious fiberglass repair whereby a fracture in the starboard strake needs a fixing. Since the boat is currently resting on her bottom, I am only doing inside work at the moment, but this particular fix, I am told, requires dishing the wood out of the fracture some on both sides using a sander, then filling the dished-out region with epoxy-resin containing silica and wood powder for gluing and wood bonding properties. I was then told to cover this with saran wrap to keep the mixture from running down the side of the boat and to help the mixture cure flat without runs or wrinkles. That did not work at all, and in fact, the heat from the epoxy-resin caused bubbles to form in the saran wrap, which resulted in bubbles in the cured epoxy-resin. Bummer! Not an unrecoverable mistake, but still. To fix this error, I sanded the cured epoxy-resin smooth. I then tilted the boat on her side, and applied the epoxy-resin again, but this time without the saran wrap, hopefully letting gravity settle the mixture into a smooth surface. I have not checked the result of this yet – hope it worked.
Another annoying mistake I have made is in the purchase of materials. First, I needed some okoume ply to repair the hole left in my dory by the extraction of the existing motor well. Since my hull is 1/2″ thick, I decided to buy 1/4″ ply and glue the pieces together to fix the hole. I also wanted to use okoume to build end decks with so I went ahead and bought 2 x 4′ x 8′, 1/4″ plywood sheets. Once I got the material home, I started looking at Gardner’s plan details a little better, which call for 3/8″ – 1/2″ plywood for the end decks; moreover, 3/8″ ply is also called for in the construction of the centerboard box. In retrospect, I should have bought a smaller piece of 1/4″ inch ply, and I should have bought the 9mm, or 3/8″, ply for end decking and centerboard construction. This was a pretty costly mistake.
Yet another material purchase mistake was made yesterday. I went to Home Depot to buy some brass screws and to see if they carried in lumber stock I might be able to use for thwarts and such. A 2′x1″ piece of Red Oak caught my fancy. I thought: ‘Man, that would look pretty all sanded and varnished as breast hooks!’. So I bought it. This morning, while reading through Thorne’s Chamberlain Dory Renovation page again that Red Oak is not suitable for boat construction. Further Googling revealed that Red Oak is prone to rot, not rot resistant like White Oak, and it’s strength to weight ratio is not very high. Shoot!
Hopefully, I will learn enough, quickly enough, to get through this boat renovation in time to get her on the water while the weather is still warm this year, and without breaking the bank! I am, however, enjoying working with my hands. I am also getting a mental workout trying to spatially understand plans and arrange boat parts in my head, manage the project timeline and cost, etc. I also feel a bit of an artisan emerging from within myself, if not in actual skill, at least in the appreciation for the art and craft of wooden boat building.







