Re: 3/8" instead of 2 layers of 1/4"
The real benefit of a double 1/4 layers is twofold.
1. Strength
2. The ability of repair. You can rout down a 1/4 for any real damage
and fit a piece overlapping the other.
I doubled the bottom on the light scooner and for fairing there was no
problem at all.
Jim
1. Strength
2. The ability of repair. You can rout down a 1/4 for any real damage
and fit a piece overlapping the other.
I doubled the bottom on the light scooner and for fairing there was no
problem at all.
Jim
With the Topaz, Bolger also calls for a doubled bottom, two layers of
1/2" to make a 1 inch. I found that the widely staggered joints of
the 1/2" layers served a real benefit to 'fair' the curve of the
finished bottom.
1/2" to make a 1 inch. I found that the widely staggered joints of
the 1/2" layers served a real benefit to 'fair' the curve of the
finished bottom.
Hi Chris,
of the ballast of the boat, and the extra strength of the thicker
material will help handle the stresses imparted on the structure by
that heavy daggerboard. I'd use 1/2" ply with glass tape butt
scarfs for the bottom, and glass the entire outside of the hull with
6- or 10-oz. cloth. The amount of rocker in the bottom of that
design looks small enough that 1/2" material should be no problem to
bend on. Alternatively, you could get clever and scarf the bottom
panel right on the boat.
Jon Kolb
www.kolbsadventures.com/boatbuilding_index.htm
> The plans for the single-handed schooner calls for 2 layers of1/4" ACX
> plywood for the bottom. I found a place that has 3 remainingsheets of
> 3/8" marine plywood, they don't plan on getting any more.I wouldn't do it. The extra weight of the 1/2" bottom panel is part
>
> Would it be OK to use 1 layer of 3/8" plywood and glass the bottom
> rather then the called for 2 layers of 1/4" without glassing the
> bottom ?
of the ballast of the boat, and the extra strength of the thicker
material will help handle the stresses imparted on the structure by
that heavy daggerboard. I'd use 1/2" ply with glass tape butt
scarfs for the bottom, and glass the entire outside of the hull with
6- or 10-oz. cloth. The amount of rocker in the bottom of that
design looks small enough that 1/2" material should be no problem to
bend on. Alternatively, you could get clever and scarf the bottom
panel right on the boat.
Jon Kolb
www.kolbsadventures.com/boatbuilding_index.htm
The plans for the single-handed schooner calls for 2 layers of 1/4" ACX
plywood for the bottom. I found a place that has 3 remaining sheets of
3/8" marine plywood, they don't plan on getting any more.
Would it be OK to use 1 layer of 3/8" plywood and glass the bottom
rather then the called for 2 layers of 1/4" without glassing the
bottom ?
Thanks
Chris Kottaridis (chriskot@...)
plywood for the bottom. I found a place that has 3 remaining sheets of
3/8" marine plywood, they don't plan on getting any more.
Would it be OK to use 1 layer of 3/8" plywood and glass the bottom
rather then the called for 2 layers of 1/4" without glassing the
bottom ?
Thanks
Chris Kottaridis (chriskot@...)