How To Repair Cracked Boat Hull
How practice I fix the cracks in my hull?
Love Boat Doctor,
I'd similar to start sailing my older MFG Pintail daysailer. The boat is consummate but it has a couple cracks in the hull. The cracks go all the fashion through the hull and are nearly 2 feet long. It'southward an older gunkhole and I am not greatly concerned with cosmetics, I just desire a solid hull. Can you requite me some tips on how to brand this repair?
Clark Case
Aurora, Ohio
Love Clark,
This repair should be very manageable. Since the cracks are all the way through, the start footstep is to grind the broken fiberglass back into solid unbroken material. Go at information technology with an electric grinder or very coarse sandpaper. Aim for a 12-to-1 taper on the fiberglass, so for the thickness of your hull, this is 2 to 3 inches by the repair. In one case you have all the bad glass out and the taper sanded in, wipe it down with acetone to remove any dirt or grease.
Since you will accept basis all the way through the hull, you need to make a capitalist to fiberglass on top of. Good old duct tape will do the play a trick on, only tightly tape over the hole in the hull from the inside, a couple layers will incorporate the fiberglass.
I like to do fiberglass repairs with epoxy; it costs a bit more fiberglass resin but is much stronger. I use West System (www.westsystem.com) epoxy, but in that location are several other brands on the market that volition do the job. You'll need epoxy resin, hardener, four-ounce fiberglass fabric and some epoxy fairing thickener.
At that place are two methods to lay upwardly fiberglass: wet and dry. With wet lay up, you saturate the material with resin and and so apply it to the repair. Using the dry method, you lay the material on dry and duster resin into the dry fabric, saturating it in place. Either method works, but I prefer to use the wet method. I find information technology handy to presaturate my fabric in a dispensable paint roller pan.
You'll need to cut fiberglass cloth to fit the repair. Start with pieces that completely cover the surface area and and then employ smaller pieces as you build up the repair.
The first step is to "wet out" the margins of the repair past brushing the tapered areas around the repair with epoxy resin. Then layer in presaturated fiberglass fabric, filling in the repair.
Later the patch dries overnight, scrub information technology with water to remove the amine blush (a past-product of curing), and sand the patch smooth with 80-grit sandpaper. You can remove the duct tape from inside the hull and sand the patch on the within too.
Side by side, mix epoxy with fairing thickener to a peanut butter consistency. Use this material to fair the patch smooth, inside and out. Sand smooth with lxxx-dust after it dries. At this bespeak your patch volition exist complete, merely finish upward the job with a bit of pigment.
How To Repair Cracked Boat Hull,
Source: https://sailingmagazine.net/article-permalink-1463.html
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