BoB Denton wanted to know the difference between resins as sold for boat building purposes and 2 part adhesives. First thing, is the 2 part adhesive an epoxy? It could be resorcinol, urea formaldehyde, or some other kind of adhesive. There are lots that come in 2 components. If it is an epoxy, and it is sold as a glue, chances are it has some kind of filler in it to make it thicker, less likely to run or get squeezed out of the joint. All sorts of things are used as fillers for adhesives: wood flour, plastic or cotton "minifibres", silica powder, metal, etc. Other fillers are used to make fairing and filling compounds, where structural adhesion isn't critical. As purchased for boat building, there are none of these things in the resin. If you want to make glue out of WEST or System 3 or what-have-you, you have to buy the filler and mix it in. Use it plain as a laminating resin, or with fillers to make adhesives and fairing compounds. Rob. *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced/forwarded outside PaddleWise without author's permission Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
Bob, Assuming you are asking about 2 part epoxy adhesives, there may be differences in the quality of the product, the resin systems used, ultimate strength, water resistance, etc. Depending on how the epoxy failed you might get better success if you increase the surface area that the glue can work on. Tying the cord to a fender washer or a block of wood and then gluing that to the deck should give greater strength to the joint. I am surprised your local distributor did not stock West's repair kits. I have found them at all of the marine stores I shop in the Twin Cities and at Rockler's a woodworker's supply store. The West repair kits sell for between 7 and 15 dollars. The first kit I bought had 2 kinds of filler, mixing containers, gloves ,stir sticks and 4 or so twin packs of West resin and hardener for around $15. I have since resupplied the resin packets although I have not yet needed to purchase additional fillers. The resin packets make up a couple of tablespoons of resin mix with fillers I have had more than enough for repairing breaks and dings in paddles, boats and other shop projects. Dana >-----Original Message----- >Date: Thu, 20 Jul 2000 10:29:06 -0400 >From: Bob Denton <> >Subject: [Paddlewise] Resin Question > >I have been trying to add two extra attachment points under >the rear of the >coaming of my Nordkapp. These are to attach the loops on my >back-band via a >small loop of bunjii to stabilize the band. > >I had glued in a couple of loops of spectra using two part >epoxy. they >failed after a month or so. I then tried 5200 which lasted >a week. Last >night I added two D rings with a small piece of webbing, >immersed in epoxy >and then covered with a piece of glass fiber. > >The smallest quantity of West resin I could purchase would >have been over >$40, but they sold me 2 squeeze bottles containing resin >and hardener. The >stuff set hard in 5 minutes. They claimed it was similar to >the West stuff. > >The question: What is the difference between the epoxy >resins used for >building and repairing boats and two part adhesives? > >Thanks > >Cya > >Bob Denton >Aqua-Gulf Transport >bdenton_at_aquagulf.com >www.aquagulf.com <http://www.aquagulf.com> *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced/forwarded outside PaddleWise without author's permission Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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