I believe the bowing you are finding is from the foam reshaping it self
after it is cut out of the block it started as, because I laid the cb in the
saddles on the workbench and noticed it didn't fit the saddles exactly,
(bowed in on the leading edge about 1/8"). You can fix this easily later.
Mix resin and silica, apply over the leading edge, thicker in the middle,
lay mylar over the edge and tape down tight to make a straight edge. The
mylar doesn't stretch. You can work the resin with your fingers, since the
mylar is covering it. This gets the bulk of the filling done, then fair it
out.
Mark
----- Original Message -----
From: "Warren Stevens" <warren@xxxxxxxxxxxx>
To: "Greg Ryan" <gregoryrryan@xxxxxxxxxxx>
Cc: "Swiftsolo" <swiftsolo@xxxxxxxxxxxx>
Sent: Tuesday, November 21, 2006 9:59 PM
Subject: Re: Re: building the centerboard
> I did the clamping with an eye to ensuring that if there was any
> "slipping" it would cause things to tighten up against the leading
> edge - but in all the heaving to get a decent clamp I may have forced
> it off. My assistant checked the leading edge and couldn't see any
> spots where it wasn't tight, so it seems ok. Time will tell, I
> suppose.
>
> One of the problems was the blank itself bows under the weight of the
> layup - the ends would fit correctly, but the centre of the blank was
> bowed in around 1/8".
>
> I added a post on swiftsolo.com.
>
> Warren
>
> On 21/11/06, Greg Ryan <gregoryrryan@xxxxxxxxxxx> wrote:
> > Dont fret it will probably come out nice any way. You must get good
contact
> > of each side down the trailing edge and afterwards dont grind that edge
too
> > close to the foam core. Did you use a wegde on the a ledge of the stand
to
> > allow you to set up the slipery wet core without loading up the core
with
> > the weight of the saddles and their plywood backing? and then clamp
lightly
> > and remove the wedges to tighten the weave?? Its an important step.
> >
> >
> > Anyway, yes, I think the better way may be to put a spar or two down the
> > center. It strengthens the core during the layup and hugely strengthens
the
> > board after and while in use. If you post on the forum when I get more
time
> > I'll post pictures and a how to reply.
> >
> > Regards Greg
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Warren Stevens" <warren@xxxxxxxxxxxx>
> > To: "Swiftsolo" <swiftsolo@xxxxxxxxxxxx>
> > Sent: Tuesday, November 21, 2006 8:15 PM
> > Subject: building the centerboard
> >
> >
> > >I have a question for you those of you who have build
> > > centerboards/rudders. Today was my centerboard day; hopefully this
> > > weekend I'll put the rudder together.
> > >
> > > When you put the saddles on the layup, what kind of perfection are you
> > > looking for in alignment? Presumably the two saddles should be able
> > > to touch their leading edges together if not for the extra material in
> > > the layup.
> > >
> > > When I layed mine up, the saddles were offset (at the trunk end) by
> > > around 1/8" - if I kept pressing them together they'd miss each other
> > > by 1/8". I tried to fix this a couple times, but the problem I ran
> > > into is it (could? would?) lead to the layup sliding up and off, which
> > > wouldn't be good.
> > >
> > > As it stands, the entire thing fell off one side of the supports, and
> > > so I wound up breaking it off the other and laying it flat. There
> > > must be a better way once the layup is done.
> > >
> > > Thanks
> > > Warren
> > >
> > > --
> > > warren stevens - catzooks.com - 299f3c94-d7c1-11da-95c0-00e08161165f
> > >
> > > This is the Swift Solo mailing list. For unsubscribe instructions,
> > > visit here: http://catzooks.com/swift-solo/
> > >
> > >
> >
> >
> > This is the Swift Solo mailing list. For unsubscribe instructions,
> > visit here: http://catzooks.com/swift-solo/
> >
> >
>
>
> --
> warren stevens - catzooks.com - 299f3c94-d7c1-11da-95c0-00e08161165f
>
> This is the Swift Solo mailing list. For unsubscribe instructions,
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>
>
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