Patching plastic sink help

[Rmoran113]

I have a hole alittle bigger than a silver dollar in the plastic sink of my 71 25' land yacht rear bath sink.. How and what's best fix?Thx

[Silverflames]

Do you have the piece that broke out? If you you might be able to epoxy it back in, and then paint the whole sink. You might also check with Inland RV to see if the have the replacement sink top. I saw one on there, but I'm not sure for what year..

[ventport]

Sand the area on the top side around the hole and bevel the edges of the hole. Put duct tape on the bottom to cover the hole and fill the hole with epoxy. When the epoxy is hard remove the duct tape and sand the bottom around the hole and the epoxy. Then spread some more epoxy on the underside where you just sanded. Then sand the top side of the bowl to blend the epoxy in with the rest of the sink, and paint.

[Rmoran113]

Originally Posted by ventport

Sand the area on the top side around the hole and bevel the edges of the hole. Put duct tape on the bottom to cover the hole and fill the hole with epoxy. When the epoxy is hard remove the duct tape and sand the bottom around the hole and the epoxy. Then spread some more epoxy on the underside where you just sanded. Then sand the top side of the bowl to blend the epoxy in with the rest of the sink, and paint.

Thx
What kind of epoxy works best with plastic?

[Rmoran113]

Originally Posted by Silverflames

Do you have the piece that broke out? If you you might be able to epoxy it back in, and then paint the whole sink. You might also check with Inland RV to see if the have the replacement sink top. I saw one on there, but I'm not sure for what year..

Thx ill try them.

[68 TWind]

I used West System Epoxy on several repairs on plastic parts in the bath of my 68. Figured if it was good enough for boat and composite airplane builders it would be fine in the AS. You can buy it at any marine supply store. I used fiberglass cloth and fixed the holes from the back side. After it dried, I mixes a little more epoxy with microballon filler and made a thick past to fill in the low spot in the front with a plastic using a plastic "bondo" applicator. After a day of drying I wet sanded the spots to blend and then painted with 2 part epoxy paint. Still looks great after 3 summers of use.

[ventport]

Which number West System epoxy & hardener did you use?

[Lumatic]

I believe the sink and counter is ABS plastic. There are several threads on different formulas for patching. Most use ABS filings with some kind of binder. Personally I found nothing that worked 100%. After a few weeks cracks reappeared. I suspect that had something to do with different rates of expansion/ contraction with temperature changes. Is your sink and counter a single unit? Airstream calls it a lavarette. I call it a sink.

[Rockwell]

I highly recommend Marine Tex... available at most boat dealers parts departments. I have repaired fuel tanks, boat hulls, washing machines and electric fuel pump... never had a leak again. It is very easy to work with, like bondo..can be sanded, painted, etc and is flexible so that it moves with the sink if it flexes at all...hope this helps
Rockwell

[Orlop]

68 TWIND's fix is the same way I worked a number of problems on my 78 Argosy redo. I use West 206 Hardner and 105 Resin. The 206 goes off a little slower. Cheerz

[Silverflames]

Another option could be to buy a oval stainless steel sink, cut out the abs sink, and drop in the stainless steel sink. It's not original, but it beats a holy sink...

[Rmoran113]

Originally Posted by Silverflames

Another option could be to buy a oval stainless steel sink, cut out the abs sink, and drop in the stainless steel sink. It's not original, but it beats a holy sink...

I like this idea..ill have to check to see it I can find correct size.