Repairing a cracked centerboard?

Aug 31, 2015
43
Oday 19 Mystic, ct
I have been sanding my "new to me" Oday 19 and noticed that the centerboard has a crack in it. Looks like it has been that way for a long time. I think it hit the axel of the trailer.

I assume that it can be fixed with resin/ glass and then fared. Does anyone have experience with how to go about repairing it correctly? I have read all the don Casey books and I think I have a good idea on how to do it but would love some advice.

Thanks!
 

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Nov 6, 2006
10,212
Hunter 34 Mandeville Louisiana
Not exactly the same kind of crack, but gets the repair idea across well.. http://www.westsystem.com/ss/repairing-deep-cracks/
I would open the crack away from the major ding and fair with epoxy paste (micro-balloons or colloidal silica mixed in epoxy) Fair that until it looks like a decent leading edge; kinda symmetrically rounded and not sharp.. match the undamaged edge.. then after that is nice and fair and smooth, cover with a couple of layers of glass cloth to make it strong.. fair and paint.. should be fine!
 
Mar 1, 2012
2,182
1961 Rhodes Meridian 25 Texas coast
Agree with Kloudie except-DON'T use micro balloons- they are hollow and if sanded, come open, and can absorb water. The colodial silica is the correct additive. BUT- don't let it set for a week after putting it in. Sand it as soon as you can. otherwise it becomes concrete! Seriously
 

JTulls

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Dec 6, 2014
89
International 14 and J-Boat J80 San Diego
I agree with the folks above. West System and silica will be your best bet -- there's a west system variety of silica that I've gotten at West Marine. Just be really careful when using the silica since it's terrible for your lungs. Definitely wear a mask and be careful where you open the carton...it'll puff out of it and "snow" everywhere if you're not careful
 
Aug 31, 2015
43
Oday 19 Mystic, ct
Thanks for the help. I assume I have to sand down a bit into the crack and then you are saying fill the crack in with epoxy paste - then basically follow the video. Seems doable. I have always wanted to learn how to do this. I guess I have an excuse now!

I think the centerboard isn't heavy either so I should be able to get it out without much trouble.