G'day,
Surprised you needed to cut it for a 6" radius. Slow, steady and even
pressure which evenly crushes the foam on the compression face should
have done the trick.
The depth of the cuts is trial and error, dependant mainly on the
radius of the curve and the foam thickness. Deep enough so it bends,
shallow enough so it doesn't show on the outside.
More, shallower and thinner are best, but time consuming. You should
also make sure all cuts are filled with bog before folding otherwise,
if water gets in (usually through a skin fitting) it travels along the
cuts and eventually gets a bit smelly and messy.
regards,
rob
On Mon, Mar 23, 2009 at 12:58 PM, Gardner Pomper <gardner@networknow.
> Hi,
>
> I am experimenting with vacuum bagging and resin infusion for the first
> time. I am trying to figure out how to bend the foam. I have tried 2 pieces
> of corecell, one 1/2" and one 3/8", both with 6 oz fiberglass on one side. I
> tried using the circular saw, and cut 8 grooves 1" apart, 3/16" deep. This
> allowed me to bend the pieces into 6" semi-circle, but the foam creases and
> you can see the fold lines on the outside of the fiberglass; it isn't a
> smooth curve.
> Is there some information on how to do this with corecell? I have a older
> booklet that talks about airex, but it is bendable.
> Should I be cutting thinner grooves than a circular saw blade? Closer
> together? Deeper? Shallower?
> Thanks!
> - Gardner Pomper
>
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