Bikemike Posted September 28, 2016 Share Posted September 28, 2016 I learned from another posting about sealing cracks in abs plastic with acetone and abs shavings and was able to salvage the black water tank. I plan to try that again with the three sizable cracks on this grey water tank. A friend suggested using a piece of fiberglass house screen as reinforcement in the abs/acetone slurry. Any comments, council, warnings? Quote Link to comment Share on other sites More sharing options...
linda s Posted September 28, 2016 Share Posted September 28, 2016 I used fiberglass cloth with a very open weave to fix mine and the shavings thing. Your cracks are flat so the screen material would work fine. I didn't use acetone. I just bought ABS glue. I think it gives you a little more working time. I think for cracks like this your supposed to drill tiny holes at the ends of the cracks to take the stress off of them. My repair was at the out flow pipe so kind of different situation. Think giant gaping hole not crack. Linda S Quote Link to comment Share on other sites More sharing options...
Bikemike Posted September 28, 2016 Author Share Posted September 28, 2016 All guped up and drying. I plan to put at least one more coat on. I drilled holes along the cracks like shoelace holes to give some anchorage to the slurry. Quote Link to comment Share on other sites More sharing options...
jdfrost64 Posted September 29, 2016 Share Posted September 29, 2016 u just need to drill one small hole on each end of the cracks.acetone and abs shavings are the way to do it what you are doing is fusing the tank cranks back together.using fiberglass screen will work for awhile .without the screen the tank will melt back together and will be stronger. Quote Link to comment Share on other sites More sharing options...
Gulfstream Greg Posted October 1, 2016 Share Posted October 1, 2016 They have a welder for those, basically a pinpoint heat gun. You heat up both sides of the crack and melt into it the same type material. Some plastic shops might have some rods of the correct material. There are other methods also. Quote Link to comment Share on other sites More sharing options...
jdfrost64 Posted October 2, 2016 Share Posted October 2, 2016 abs plastic is not ment to be welded won't hold. the newer types of plastic in the newer tanks can be welded.you can tell the newer tanks by how flexable they are and the plastic is a light gray color. those tanks we used to speed spin the fittings into them .as for welding them .if you don't know what you are doing in seconds there trash. I took a class on repairing them for coachman. abs tanks were chemical fused together Quote Link to comment Share on other sites More sharing options...
5Toyota Posted October 3, 2016 Share Posted October 3, 2016 I have used ABS glue to repair broken grills and plastic hub caps did a nice job Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.