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Repair of big holes advice wanted! Now with pictures... http://www.hobie.com/forums/viewtopic.php?f=20&t=38431 |
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Author: | Josefk [ Wed Sep 14, 2011 8:22 pm ] |
Post subject: | Re: Repair of big holes advice wanted! Now with pictures... |
Doing some more searching I found the information I needed in this pdf doc...lots of detailed explanations of various techniques for fiberglass repairs. http://westsystem.com/ss/assets/HowTo-Publications/Fiberglass-Boat-Repair-and-Maintenance.pdf |
Author: | reelknotty [ Thu Sep 15, 2011 7:47 am ] |
Post subject: | Re: Repair of big holes advice wanted! Now with pictures... |
looks like your on the right track. As they say alot on this board "if its fiberglass it can be fixed". Since it appears these are impact puncture wounds I would make sure your inner skin is solid above all else. other than that I think you have it figured out. The holes appear to be small so it would be just as easy to fill it with polyester putty than it is to find and mess with Divinycell (only foam that will work with polyester resin). I don't think you will add enough weight to make a difference by using putty over divinycell based on what i see in the pictures. I can't stress enough to make sure all of the damaged inner layer is fixed and solid before you start building out. |
Author: | Josefk [ Fri Sep 16, 2011 10:10 pm ] |
Post subject: | Re: Repair of big holes advice wanted! Now with pictures... |
Thanks for the reply, hadn't thought of using putty in place of foam. I've assessed the damage more thoroughly and there is delamination of the inner glass a couple of inches past the cracks/holes. I can cut out an oval shaped area which would take care of these sections and make a good area to work on building back up. About the foam, if I wanted to go that way, it would be difficult for me to source divinycell (I live in Japan making things that extra bit complicated) but I have come across mention in the forum of EPP (Expanded Polypropylene?) being used also. Can anyone confirm/deny this as I can get hold of that from a local RC model shop. I can't work on it this weekend as I had hoped (another typhoon is approaching - hopefully I won't have any more holes to repair after the weekend!!) which gives me more time to figure out my best plan of action... |
Author: | srm [ Sat Sep 17, 2011 10:22 am ] |
Post subject: | Re: Repair of big holes advice wanted! Now with pictures... |
Whatever core material you use, make sure its compatible with your resin system. Polyester resin will dissolve certain types of foam. sm |
Author: | Sail Revolution [ Sat Sep 17, 2011 9:41 pm ] |
Post subject: | Re: Repair of big holes advice wanted! Now with pictures... |
There's a great article on this exact repair by Rick Buchanan in one of the more recent Hotlines. Someone knows which issue it's in. There's really no need to use expensive epoxy systems for this simple repair. I would also suggest using foam core. You don't want to create a hard spot, which can potentially crack. |
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