Re: Lofting Spur II

I've had a 9.6v Makita 3 3/4" saw for several years. It seems like a "toy",
but will cut 3 to 4 lengths of 3/4" plywood on a charge. With a carbide
blade, it cut extremely smoothly [as smooth as a carbide 7 1/4" 40T planer
blade]. You will need several batteries for serious useage.

Rich


Date: Wed, 24 Apr 2002 22:46:37 -0000
From: "brucehallman" <brucehallman@...>
Subject: Lofting Spur II

Just for the fun of it, and because I am curious about experimenting
with [a first attempt at] lap-strake construction, I started lofting
of Spur II from the offsets in Ch.11 of BWAOM. See scan:
http://www.hallman.org/bolger/spur/spur.gif

My first impression, after seeing the lines at full scale, is how
big this boat is while weighing only 100 lbs. Seems like it will
only take 6 [or 7] sheets of 1/4" plywood.

Also, comparing the PCB detailing with "traditional lap-strake" in
the H.I. Chapelle Boatbuilding book, calls attention to the huge
changes brought to boat building with 'modern things' like plywood,
[epoxy, etc.]

I'd appreciate any advice about lap-strakes.

Also, I guess it makes sense to scarf join the 8' plywood end to end
before cutting out the strakes.

And, has anybody used one of those cordless circular saws, which seem
well suited for cutting large smooth curves out of 1/4" plywood?

And more, the meaning of the words 'garboard' and 'spiling' are
dawning in my consciousness.

Does anybody know a source of copper rivets and burrs? Then again, I
am inclined to try using epoxy in the laps instead of metal fasteners.