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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Keel to Hull Fairing		  New Topic  Topic Locked
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cch
Navigator

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202 Posts
Initially Posted - 10/30/2003 :  19:38:43  Show Profile
I am fairing the joint between our new wing keel and the hull our our older (1980) C-25.

After installing the new keel and glassing in the joint, the boatyard turned the job of fairing the joint over to me. I am looking for opinions on how smooth this joint must be. My skill with thickened epoxy is limited and I am finiding the fairing process slow and frustrating. I realize the smoother the better but would appreciate any input.
Chris Hunsicker
Panama City FL
Moonglade
80 C25 #2126 sr/now wk
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 10/30/2003 :  22:20:21  Show Profile
Just a thought. Lots of people here talk about the rudder shake from a dirty bottom. I think if I were doing it,I would work on it till it dissapears. You may setup a turbulance/ rudder shake thing that will only get worse when the bottom gets bumpy. Frog911 may be able to chime in on this one.
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Steve Milby
Past Commodore

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USA
5909 Posts
Response Posted - 10/31/2003 :  08:21:49  Show Profile
It is important for all underwater surfaces to be smooth. I'm no fiberglass pro either, but have done a fair amount. I would apply it as smoothly as possible in layers, building it up to the desired thickness. Smoothing hardened fiberglass is not easily done with a sander. You need a 4 1/2 inch grinder. Get it fairly smooth with the grinder, and then do the final smoothing by either filling in the depressions or by sanding down the ridges. It does take patience.
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aeckhart
Master Marine Consultant

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USA
1709 Posts
Response Posted - 10/31/2003 :  09:10:16  Show Profile  Visit aeckhart's Homepage
Seems to me that if the fiberglassing is completed, all you need do is apply fairing compound to smooth out the rough spots. Get some two-part epoxy fairing compound from WestMarine, mix it according to the instructions, smooth it on - like putty, let dry, sand, and paint. Simple!


Al
GALLIVANT 5801
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cch
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202 Posts
Response Posted - 10/31/2003 :  15:31:51  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Steve Milby</i>
<br /> Smoothing hardened fiberglass is not easily done with a sander. You need a 4 1/2 inch grinder. Get it fairly smooth with the grinder, and then do the final smoothing by either filling in the depressions or by sanding down the ridges. It does take patience.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

I'll agree with that. I am finding how important it is to get the epoxy on smooth to keep the sanding to a minimum.
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cch
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202 Posts
Response Posted - 10/31/2003 :  18:54:17  Show Profile
There is not substitute for experience and proper equipment. I talked a guy at the boatyard into laying a smooth clean coat of epoxy on the seam I have been working on. The spreader he used (39 cents in the boatyard store) worked ten times better than what I have been using. He also used alot more epoxy than I. The seam is looking great, should have it ready for paint tomorrow.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.