Thanks, Josh. On the advice of a club member, I got a scotch brite type wheel for the angle grinder today and ground the joint down to clean lead all the way around, which in most cases was just going down 1/2" or so, and 2-3" in the few bad spots. So it sounds like I need to feather it further by hand, then apply the G-Flex material as you suggested. I didn't get much else done today due to forgetting too many things so I quit early. Having the boat 45 minutes away is a pain when you forget things.
No chance of getting G-Flex tomorrow, so I'll probably do the bottom paint on the upper part of the hull, and finish the keel joint Monday. I planned to start the paint today, but forget my paint mixer, amongst other little things that went wrong... On Sat, May 4, 2019 at 5:39 PM Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > Are you doing this sanding by hand? The voids you reference look mostly > like fairing compound that chipped off. Definitely get a hand sander or > even a grinder and don't hesitate to go down to 60 grit. Feather the > chipped areas back and then fill and fair as previously discussed. I would > definitely plan on fairing the gap at least 4 inches wide and 6 or 8 > wouldn't be unreasonable. As such, feather back the bottom paint and use a > straight edge to the see what things look like so you can select an > appropriate width putty knife. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > On Sat, May 4, 2019, 11:58 AM Shawn Wright via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Hi there, >> >> Well, she's on the hard for two weeks, so I'm attending to anything below >> the waterline during this time, and puttering on smaller items inside as >> well. >> >> The black goo is not water soluble, and seems like a sticky grease. One >> guy suggested it could be some of the flexible sealant which didn't set due >> to exposure to water or acetone. Both sides of the joint have been faired >> with white epoxy, and the goo coincides with a few small voids in the >> original layup, so possibly water or a cleaner was trapped in there. If it >> continued to ooze out I would be worried, but only a small amount came out >> when I cut the sealer out, and then stopped. >> >> Here are some photos showing the hull after pressure washing, and then >> after sanding and cleaning out the keel joint. >> >> https://photos.app.goo.gl/YRS6RhB6iRCJmm5y9 >> >> There are two sections where the epoxy is separating from the keel and >> lead corrosion is evident, so it has been suggested that I grind this back >> to clean lead and then re-seal with epoxy. I am not sure if I should just >> make the whole joint smooth with epoxy, or try to maintain a V shaped gap, >> and then seal the gap with Sikaflex in case there is some movement. If >> there has been moved, it is minimal, as the old black sealer was in a V gap >> about 3-5mm wide by 3-5mm deep, and was well bonded both top and bottom >> before I cut it out with a knife. The final photos in the album are after I >> sanded with a wedge of 80 grit to clean out the joint. >> >> Here is the photo of the section with the epoxy delaminating from the >> keel: >> https://photos.app.goo.gl/GMqo3PdtWHk5JuzT8 >> >> On Fri, May 3, 2019 at 8:10 PM Josh Muckley via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> You're not wasting any time are you?! Forgive me if you already >>> described this boat defect but how bad was the keel joint that you are >>> already tearing in to it? Most people live with a smile for a few years, >>> then tighten the bolts and wait another few years, then if needed perform >>> some type of additional remediation. >>> >>> You didn't describe if the goo was water soluble. All types of >>> biological growth and slime occurs when water gets trapped and bilges are >>> subject to collect lost of various liquids. >>> >>> Josh Muckley >>> S/V Sea Hawk >>> 1989 C&C 37+ >>> Solomons, MD >>> >>> On Fri, May 3, 2019, 9:46 AM Shawn Wright via CnC-List < >>> cnc-list@cnc-list.com> wrote: >>> >>>> While cutting out the rubbery sealant between the keel joint on my >>>> 35-2, I came across a spot on the starboard side, about 14-16" from the aft >>>> end of the keel, where some black goo came out. It has a consistency of >>>> grease, with no obvious smell. >>>> >>>> Any idea what this might be? Perhaps some water in the cavity which >>>> prevented the sealant from curing in that area? It only appears in a small >>>> 3-4" long section. >>>> >>>> -- >>>> Shawn Wright >>>> shawngwri...@gmail.com >>>> _______________________________________________ >>>> >>>> Thanks everyone for supporting this list with your contributions. Each >>>> and every one is greatly appreciated. If you want to support the list - >>>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>>> >>>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >> >> -- >> Shawn Wright >> shawngwri...@gmail.com >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Shawn Wright shawngwri...@gmail.com
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
