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Old 11-10-2011, 11:39 AM   #1
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1971 31' Excella 500
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Question Sink plastic patch- '71 Excella

I am working on a 1971 excella . the sink and wall moulding have some
cracks and small holes. What material should be used to patch this up ?
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Old 11-10-2011, 12:07 PM   #2
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I am working on a 1971 excella . the sink and wall moulding have some
cracks and small holes. What material should be used to patch this up ?
Cut some excess plastic material where it will not show.

Dissolve it in some plastic solvent. Make it a thick liquid.

"V" groove the cracks.

Apply the liquid plastic into those grooves.

Let it set up for a couple of days.

Then, add more plastic to the grooves.

Repeat as many times as necessary to allow an excess buildup.

Make super sure that the plastic has hardened.

Wet sand the excess down, until the excess is gone.

Lastly, polish the area with a buffer as need be, starting with a "compound" and then going to a wax.

Andy
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Old 11-10-2011, 12:31 PM   #3
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I used West System epoxy and fiberglass cloth patches on the back side of several cracks on plastic bathroom trim. This is where there was no hole, just cracks. If you take care and get the edges aligned you won't be able to see the cracks after you paint the pieces. As for painting, Krylon Fusion works well on the trim. I used a two part epoxy tile paint for the tub and lav. It is much more durable than the Krylon but much harder to spray.
Andy's method is also a good option, I have used West Epoxy of various projects and was much more familiar with working it.
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Old 11-10-2011, 04:35 PM   #4
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Originally Posted by Inland RV Center, In View Post
Cut some excess plastic material where it will not show.

Dissolve it in some plastic solvent. Make it a thick liquid.......

Andy
I did a similar repair to the sink in my '72 this summer.
I would recommend Plastic Weld. http://plastruct.com/picat/GLUES_TOOLS_9.pdf as the solvent.
This has a resin incorporated into the liquid that remains after evaporation. The resin strengthens the bond considerably and works with the ASB better than the MEK commonly used in plastic cements.

Tom
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Old 01-28-2012, 11:38 AM   #5
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I used JB weld Quick Plastic epoxy putty. It works great for abs plastic repair of holes
and cracks. I purchased at Home Depot.
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