Grant MacLaren's Burgee

Model of Grant MacLaren

Grant MacLaren

An Earlier Project



Storer Boat Plans


The strongback is only 10 ft. long. That's 1/2 the length I'd originally thought I'd make it. I bought enouh materials to make it 20 ft. long, but when I laid it out in my garage, it just did not seem practical. So, I now intend to build Twilight in two "10 ft." sections. The side pieces witll be 10 ft. long, but will bend in to the bow and stern so the resulting boat will be a bit shorter that 20 ft. I had thought buiding it in "one piece" would result in a smoother fairing of its shape.

But for many reasons, I'm now thinking building it in two pieces will actually be better, for a number of reasons.

Another major change under consideration is making the beam wider -- possibly 30 inches at the "10 ft." station, and 24 inches at the "4 ft." and "16 ft." stations. Stay tuned.

1/16/10 is a Saturday. I'll probably get the strongback finished, then go to Lowes for a couple of pieces of the 1/4" underlay ply I saw there the other day. It's called SurePly. (Made in China, of course.) HERE'S A LINK

I'm again thinking of making the beam 24 inches.

I'm also using a nice long batten to determine "rocker" shape, and wondering how I can make cockpit section have less rocker than the ends, while retaining the "look" above the water line.

1/16/10 - - - and I forgot about the public hearing I had to attend. (You don't wanna know.)

1/17/10 - - - Reviewed Jim Michalik's plans for his Piragua 18 this morning. (I bought his blueprints, etc. last year.) Sunday afternoon went to Lowes and bought two sheets of Sureply, for $43.09 with tax. (I'm really not sure about this stuff, but their website claims waterproof glue, and the surfaces look very nice.)

The batten isn't working out as well as I thought it would. (Recent photos vis my iPhone. Not bad, considering no flash, methinks. Of course, some of the phots are taken with ny digital camera.)

Might mix up a bit of epoxy tomorrow and make the butt splices in the sides, IF I get the layout to my satisfaction. Still thinking about the beam width.

It's now 1/19/10, ans still no epoxy mixed. The curve of the rocker is perplexing. Let's review:

  • The circle's arc can be obtained using a radius of 86 ft.
  • The chord (or Twilight's apx. water line length = 20 ft.
  • The "rocker" (or segment height of 7 inches at 10 ft on the chord) = 7/12 of a foot, or .58333333 ft.
  • So, now I'd like to know the segmet heights at every one of the 10 ft. "stations" along half the chord.

1/20/10 -- I've decided to make the two "cockpits" four feet in length, and the max. beam (at the "transoms") 28 inches wide.

Also, I'm going to make the cockpit section flat-bottomed. This might not look all that great, but I think it will improve stability.

So today, I laid out two (of the four) sides and mixed up a small batch of epoxy (my first on this boat, mixed for 3 minutes) and butt-spliced one of the sides as pictured here:

Now we'll see how long it takes for this stuff to cure. It's the "slow" hardner, and the temperature in the shop is about 55 degrees F. without the space heater running. In the photo, notice:

  • The throw-away measuring cups (as recommended by David L. Nichols)
  • The wax paper under the seam
  • The throw-away mixing container
  • Dry-wall screws used as clamps
  • The white batten (which was removed right after photo was made)
  • Not shown -- 1/2 cottage cheese container lid used as squeege

1/21/010 -- Epoxy set up nicely. I built a "tent" over the joint and left a 50W lamp burning in it overnight. Temperature inside tent was 100 degrees F. this morning. Today I trimmed two edges of the piece containing the two sides, flipped it and made another butt joint, and applied some tape to the first butt joint. Then I built another "oven."

I've read lots of warning about getting epoxy on my skin. The primary risk associated with epoxy use is sensitization to the hardener, which, over time, can induce an allergic reaction. It is a main source of occupational asthma among users of plastics. So I wear gloves when working with epoxy. From Wikipedia: Vinegar is an effective and safe solvent to clean up tools, brushes, skin, and most surfaces contaminated with epoxy resin or hardener. Acetone can also be used, but it is very volatile and flammable, unlike vinegar. Vinegar is safer for cleaning epoxy resin from human skin than acetone: both liquids will dissolve the resin, but the resin/acetone solution can easily pass through the skin into the bloodstream, unlike vinegar. White vinegar can even clean up epoxy resin that is beginning to cure/harden.


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visits since 2/29/08