Re: Andrews rib

From: soslipstream <parkreation_at_msn.com>
Date: Mon, 31 Mar 2008 19:33:20 -0000

A couple of things Scotty-

1) You do not have to laminate. You can make a mold cutting a block
of hardwood (basswood is good, 2"x4"x6") on a bandsaw in a given
camber given you two halves for a mold. Then soak the balsa sheet
wood and when softened clamp it between the two halves and let dry
for a few days. I like to mold three sheets expecting the middle to
be pristine. When you remove the molded sheet, it will stay curved
even if you press it flat. These will be less weight but still
stronger than typical sliced ribs.

2) Press the molded sheet flat with a straight edge and slice off
the ribs they will instantly return to their cambered shape. The
same will happen if you use a balsa stripper.

Tom Sanders

--- In Indoor_Construction_at_yahoogroups.com, "scott_and_sheri"
<hansesc_at_...> wrote:
>
> Let me see if I understand. You are laminating 1/32 wood and
forming
> it over a form and letting it dry to shape (airfoil shaped). You
then
> go back and slice off thin sections of this pre-curved laminate
blank
> from what would be the top. Is that correct? In other words, you
use
> a flexible straight edge and slice the ribs while the pre-curved
wood
> is still on the form?
> Sounds interesting.
> Thanks,
> Scotty
>
> --- In Indoor_Construction_at_yahoogroups.com, "wombat_eagle"
> <wombatt_at_> wrote:
> >
> > I laminate using 1/32 or thinner A grain and thinned white glue,
clamp
> > up and let dry naturally - don't have appreciable springback.
Clamp
> > is made from a piece of 2 x 4 with a rib profile cut with a
bandsaw.
> >
> > wombat
> >
>
Received on Mon Mar 31 2008 - 12:33:24 CEST