With an undulating impact and subsequent rise and fall of the hull into and out of sight in the rear view mirror, two thoughts flashed to mind: the sloop Kaitlin was not to sail at the 38th Annual Port Townsend Wooden Boat Festival, and that a wooden boat is infinitely repairable. The worst case scenario of boat trailering had just occurred, a rear‐end car collision into a stopped trailered boat. The car's impact and continuing movement forward had, among other events, forced the small transom mounted outboard inward toward and under the hull, explosively rupturing the epoxy laminated plywood transom, leaving both the mount and attached outboard motor separated and hanging on a remaining splinter of wood. Where the motor mount had once been attached was now a jagged edged rectangular hole large enough to pass a soccer ball through.
Wouldn’t it be nice if there were a way to eliminate the chance of measuring and mixing errors, maximize the resin strength by eliminating air, always use freshly mixed material, enjoy top of the line products, save time, eliminate waste and have more fun? There is such a way. It’s called using dual cartridges. To use one you simply drop it into a caulking gun, prime it and screw on the tip to dispense thoroughly mixed and precisely measured material free of air. You put the mixed material right where it is needed with little waste. Using dual cartridges is fun and is the quick, confident way to kick back and watch things cure!
Our Epoxy Paste Pigments are pure, dry, colored, pigments dispersed in in an epoxy resin blend. They are pourable, easily measured, and contain no solvents, and may be blended with one another to produce additional colors. Since they are dispersed in an epoxy resin blend, they react into the system and do not change its cured properties. The proper way to use these pigments is to add them to the resin (Part A) side and then add the hardener(Part B) at the correct ratio for the epoxy system being used.
Over the last thirty years, chemical product manufacturers have had to meet tremendous challenges. Two of these with huge impact are regulatory requirements and, less prominent, but with greater long-term effects, changing customer attitudes. System Three Resins, a manufacturer of polymer products in the marine industry for over twenty-five of those thirty years, has met those challenges. And one area where we feel we've done better than most is marine coatings.
A common technical question goes something like this: "Will XYZ paint work over your epoxy?" Or perhaps the corollary question "Will your epoxy work over ABC stain?" Our answer, which is almost always the same, often shocks the inquirer: "We don't know, you'll have to test it yourself. Here's how to do it...".
A high Tg resin may be cured in two ways: It can be cured initially at elevated temperatures or it can be partially cured (becomes solid) at room temperature and then heated (post-cured). The two routes get one to the same place if sufficient time is allowed for both. The first route can be tricky because the epoxy reaction is exothermic and may excessively spike the temperature. Most boats are laid up at room temperature - hand lay up, vacuum bagged or infused - and post cured later simply because this route is considerably easier...
Occasionally one needs to bring fiberglass cloth around a sharp edge. This could occur on the trailing edge of a rudder, for example. Those who have tried this know that it is almost impossible to do. The fiberglass is just too "springy" and lifts from the edge creating air pockets. These eventually tear or fill with water. In either case the wooden substrate gets wet and the reason for having the fiberglass there in the first place is lost. While it is possible to keep pushing the fiberglass back down until the tackiness of the resin finally holds it in place there are far better ways to do this.