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PostPosted: Sun Aug 22, 2010 4:55 pm 
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Location: Vancouver, BC
Hello

I've been reading that when fiberglassing you are supposed to round any sharper edges so that you can wrap the glass around, like around the sheer clamp and the bottom edge of the transom. Then build up those edges with a few layers of fiberglass and fair to a crisp edge.

But I've seen some pictures of the process in the photos section - specifically of the TNT - and from what I can tell it appears that some didn't do that, at least on the bottom edge of the tansom, and it looks like it worked out fine. Has anyone just glassed over that corner and it all worked out well?

Couldn't I just fiberglass the bottom and then trim flush to the sheer and transom then glass the decking and transom and trim those flush to the bottom so I maintain the crisp edge? Or do I need to overlap?

I plan on adding a spray rail so I'm thinking that process would work along the sheer clamp, but not sure about the transom.

Any advice is appreciated,

Dan


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PostPosted: Mon Aug 23, 2010 11:08 am 
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I would round off everything and overlap the seams. It doesnt take a lot of radius, just round it about like a pencil.

It wont take a much time at all to build the transom bottom edge back up.

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PostPosted: Mon Aug 23, 2010 12:38 pm 
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you need to round the bottom of the transom before you fiberglass. BUT then you also need to build the area up enough with fiberglass so that you can make the edge square or crisp by grinding/sanding it.

http://www.glen-l.com/weblettr/weblette ... erglassing


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PostPosted: Tue Aug 24, 2010 9:50 am 
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Okay I will overlap and build up the transom edge. Now that brings up another question though - if the glass overlaps along the keel, and at the transom, it will be 3 layers thick where the keel meets the transom. How do I get around that, do I trim off the extra layer there or sand down afterwards?

Dan


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PostPosted: Tue Aug 24, 2010 10:26 am 
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After each piece or section that you fiberglass cures youll sand the overlapped edge to "feather" it so the next overlap sits flat. If you do a nice job feathering it wont be noticed.

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PostPosted: Tue Aug 24, 2010 11:43 am 
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oh so that means that I will almost sand the overlap right back down to the plywood and butt the next piece up to the edge of the previous one?

Sorry I've never fiberglassed anything before so I just want to make sure I know what I'm doing before I get into it

Thanks for your help

Dan


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PostPosted: Tue Aug 24, 2010 3:24 pm 
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Not quite that much but you get the idea. It will make sense when it hardens and you will see and feel how much to sand.

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