Thank You, that is a lot of information condensed. I have a challenge. Whoever built my hull # 5, missed the sump location by an inch. So I need to extend the sump wall horizontally. I would thing that I would start wetting structural mat and go horizontally out from where the exposed nut is. It is basically a 4 inch vertical wall than needs to be filled in. The situation is in PIC 3 <http://www.boatjuggler.com/images/pic3.jpg> Here is sort of a drawing <http://www.boatjuggler.com/images/Drawing.jpg>I have. What might be the best way to build up the vertical wall that will eventually withstand the pressure of the nut besides just keep on adding cloth until I have the desired width ? Ahmet
On Tue, Nov 24, 2015 at 8:10 PM, Dave via CnC-List <cnc-list@cnc-list.com> wrote: > Glass strands (various lengths from milled fibres to chopped strands)- > hard to fair but strong - structural. > Fumed silica - cab-o-sil - this is a colloidal filler, it keeps the epoxy > from flowing. This is not the same thing as making it 'thicker' - glass > will do that, but without silica, the reain can still run, fillers can > still sag. You need silica to make putty. The stiffness of the mix will > vary - is this for coating, laminating, adhesion with gap filling, fairing, > structural filling? > Micro balloons - fillers with various degrees of fair-ability. Different > materials. > Talc - cheap-ass filler used in bondo and 'cow flap' polyester used in our > c&cs. > > Peel ply - a nylon material that is porous to epoxy that can be lifted off > after cure. Leaves a finished surface. (More significant in vaccum > bagging). Nylon taffeta from the fabric store works. > > Acetone can be used on a cloth to help shape 'b stage' epoxy. Isopropyl > alcohol for clean up (a challenge) > > Waxed paper or 'tack tape' works as a release. > > I welcome critiques or additions.... Lots of good info on the gougeon > site and many others . > > Great stuff to experiment with. > > Dave > > > Sent from my iPhone > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > -- ------------------------------------------- Ahmet *"S/V Waterdancer"* 1990 Irwin 43 CC "Tabasco" 1973 C&C 25 Winthrop Yacht Club, Winthrop, MA / USA -------------------------------------------
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