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Unread 09-12-2009, 12:29 AM   #1
CJ Runner
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1978 CJ5 
 
Join Date: Jun 2007
Location: Maryland
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CJ5 Body Work

I'm getting my CJ5 fiberglass tub ready so I can spray UPOL. Right now I'm trying to seal the outer and inner shell of the tub. You can see the lip that I'm trying to seal up in the pic:

The gap between the outter shell and inner shell ranges from 0 (meaning they touch) to 1/2". My thought was to spread silicon caulk into the gap, let it dry and then use resin to smooth out the ridge you can see between the two shells.

In this pick below, the two shells didn't have a gap between them, just the ridge, so I just used resin to kind of blend it in so it looks like one piece.


Do you think I should now add a fiberglass layer over this and then start to add Bondo to smooth it out or should I just continue to use the resin? I'm using west system 20 resin and adding a microfiber filler so far. Any suggestions are appreciated

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Unread 09-12-2009, 06:57 AM   #2
BESRK
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1980 CJ5 
 
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If you're going to shoot a bed liner in the tub, it doesn't really need to be completely smooth. I'd probably just lay a strip of woven cloth on the joints to tie them in and call it good.
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Unread 09-12-2009, 10:28 AM   #3
ken78cj5
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I teach composite repair and fabrication and IMO would either continue with the resin with the microfiber and blend it in, or as Beserk said, if you are going to line the tub it won't make much difference. A trick you can try is to apply wax paper or plastic document protectors and use a plastic putty knife as a "squeegee" to get the air pockets out. Leave the paper/plastic on until the resin dries. You will have a lot less sanding.

Also remember that if you put more than one layer on, be sure to lay the second layer 45 degrees to the first. When you cut the cloth do not leave corners, round them off, this will help to keep the cloth from unravelling.

Good luck.

Ken
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Unread 09-14-2009, 03:31 PM   #4
47redwillys
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You have to be careful what you put polyester resin over. It won't cure over some stuff. I'd test it first before putting it in your permanent parts.
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