[Rhodes22-list] CB trunk Surgery - Roger's Recommended MOC

[Todd Tavares]

Roger,

  Is there a way to thin a small amount of epoxy to brush onto the exposed cement first?

Todd


----- Original Message -----
From: "Roger Pihlaja" <cen09402 at centurytel.net>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Subject: Re: [Rhodes22-list] CB trunk Surgery - Roger's Recommended MOC
Date: Thu, 9 Dec 2004 15:59:18 -0500

> 
> Steve,
> 
> MOC property = Material Of Construction property
> 
> What I was refering to was to trowel in uncured 3M 5200 polyurethane
> adhesive directly over the cement.  The 3M 5200 would be the patch in this
> case.  Even cured, this material is no where near stiff enough for this
> application.
> 
> I wouldn't use 3M 5200 to attach some other patch material to the cement
> either.  3M 5200 is too viscous to properly soak into the cement to develop
> a strong bond with it.
> 
> I suggested using untickened epoxy as a tie layer with the cement.  The low
> viscosity epoxy will soak into the porosity in the cement, creating a deep
> mechanical & chemical bond with the cement.
> 
> Roger Pihlaja
> S/V Dynamic Equilibrium
> 
> ----- Original Message -----
> From: "Steve" <rhodes2282 at yahoo.com>
> To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> Sent: Thursday, December 09, 2004 3:43 PM
> Subject: Re: [Rhodes22-list] CB trunk Surgery - Roger's Recommended MOC
> 
> 
> > Roger
> > 3-M 5200 polyurethane caulk to
> > > build up the patch as some
> > > others have suggested.  Polyurethane caulk has the
> > > wrong MOC properties for
> > > this application.
> >
> > I don't get what you mean here.  I wasn't talking
> > about building up a patch with 3M 5200; 3M 5200 is the
> > patch if you when that route.  Also, what are you
> > talking about when you say MOC properties?
> > Steve
> >
> >
> > --- Roger Pihlaja <cen09402 at centurytel.net> wrote:
> >
> > > Lou,
> > >
> > > I would use prefabricated G-10 sheets.  G-10 is a
> > > composite material made
> > > from oriented glass fiber & epoxy and it is very
> > > stiff.  You will be able to
> > > cut it with a saber saw to an exact fit into
> > > whatever size & shape the hole
> > > in your centerboard well ends up being.  You can
> > > order G-10 in panels as
> > > small as 12 inch X 12 inch up to as large as 36 inch
> > > X 48 inch in any
> > > thickness ranging from 1/32 inch to 2 inch.  Use an
> > > unthickened epoxy tie
> > > layer soaked into the cement and also on the cement
> > > side of the G-10 patch.
> > > Then, I would use a fiberglass tape laminated with
> > > epoxy to bridge the
> > > remaining gap between the G-10 patch and the old
> > > centerboard well.  The
> > > centerboard well side of the G-10 patch will still
> > > need the final coat of
> > > epoxy loaded up with West 422 Barrier Additive.
> > > G-10 sheets can be ordered
> > > from:
> > >
> > > McMaster-Carr Supply Company
> > > 473 Ridge Rd.
> > > Dayton, NJ  08810-0317
> > > 732-329-3200 (Sales)
> > > www.mcmaster.com
> > >
> > > Tell them you want "Grade G-10/FR4 Garolite" in
> > > whatever sheet size &
> > > thickness you need.
> > >
> > > Note, do not use 3-M 5200 polyurethane caulk to
> > > build up the patch as some
> > > others have suggested.  Polyurethane caulk has the
> > > wrong MOC properties for
> > > this application.
> > >
> > > Roger Pihlaja
> > > S/V Dynamic Equilibrium
> > >
> > >
> > > ----- Original Message -----
> > > From: "Lou Rosenberg" <lsr3 at MAIL.nyu.edu>
> > > To: "The Rhodes 22 mail list"
> > > <rhodes22-list at rhodes22.org>
> > > Sent: Thursday, December 09, 2004 11:22 AM
> > > Subject: Re: [Rhodes22-list] CB trunk surgery
> > >
> > >
> > > > Roger,
> > > >    I purchase a small cutting disc for my dremel
> > > yesterday and hope to
> > > > begin the work on Sun.
> > > >    My plan is to:
> > > >     Remove the cement which is causing the bulge,
> > > then I will have to
> > > > insert a  thin plastic or metal piece to cover the
> > > cement as the
> > > > epoxy will not bond directly to the cement
> > > effectively.
> > > >   I will sand the thin plastic down for good
> > > adherance  quality and
> > > > hope to just fit it under snugly to the
> > > surrounding trunk.
> > > >   any comments/ suggestions??
> > > >   Lou
> > > >
> > > > __________________________________________________
> > > > Use Rhodes22-list at rhodes22.org, Help?
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> > > >
> > > >
> > >
> > >
> > > __________________________________________________
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> > >
> >
> >
> >
> >
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> 
> 
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