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> Early rain trays, Any fix for cracks? How about it knowledge base?
Pat Garvey
post Jun 14 2007, 06:40 PM
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I've been looking for a proper rain tray for my '72 for 3 years now. My original is cracked beyond repair (which I attempted with epoxy - lasted maybe 2 weeks).

I was told some time ago that they used some sort of specialized moulded plastic for these things, and that no glue, bondo, etc. would adhere (could be bogus, but don't know).

Has ANYONE had any success in rebonding small cracks (1/2-1") in these things?
Pat
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r_towle
post Jun 15 2007, 10:46 PM
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My friend had a leak in his 928 gas tank.
He called his plastic engineer buddy who told him that it could be welded.
Apparently there are some new toys out there that someone needs to buy.

Its basically a torch, not sure of the gas, but I would be that propane would work, it does not need to be hot.
The filler needs to be of the same blend of plastic (why you need someone who can look at it and tell you what it is)
From there, the guy basically torch welded the leak, and you cant see it at all.

Same as steel.
Clean up the area, rough it up a bit with sand paper.
Clean up with alcohol to make sure its just plastic, nothing else.
Torch in one hand, rod in the other.
It took the same amount of time as it would to weld a steel item.

He told me that the rods are available at any local plastics supply house (like I know where that may be)
In any event, I guess its a pretty common way to fix plastic now adays.

Rich
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RoninEclipse2G
post Jun 16 2007, 02:26 PM
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QUOTE(r_towle @ Jun 15 2007, 10:46 PM) *

My friend had a leak in his 928 gas tank.
He called his plastic engineer buddy who told him that it could be welded.
Apparently there are some new toys out there that someone needs to buy.

Its basically a torch, not sure of the gas, but I would be that propane would work, it does not need to be hot.
The filler needs to be of the same blend of plastic (why you need someone who can look at it and tell you what it is)
From there, the guy basically torch welded the leak, and you cant see it at all.

Same as steel.
Clean up the area, rough it up a bit with sand paper.
Clean up with alcohol to make sure its just plastic, nothing else.
Torch in one hand, rod in the other.
It took the same amount of time as it would to weld a steel item.

He told me that the rods are available at any local plastics supply house (like I know where that may be)
In any event, I guess its a pretty common way to fix plastic now adays.

Rich


I've been fixing plastic stuff like this for years. a butane pencil torch and zip-ties, kinda like braizing or soldering, helps if you have a putty knife or something to flatten/press it into place. come to think of it I bet this would work on the raintray for the creamsicle (IMG:style_emoticons/default/idea.gif)
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Posts in this topic
Pat Garvey   Early rain trays   Jun 14 2007, 06:40 PM
scotty b   I haven't actually tried it on a rain tray, an...   Jun 14 2007, 06:51 PM
iamchappy   Why not just buy a nice used one.   Jun 14 2007, 06:57 PM
Pat Garvey   Why not just buy a nice used one. Maybe you didn...   Jun 14 2007, 08:34 PM
Eric_Shea   I would bet JB Weld would work wonders. It would ...   Jun 14 2007, 06:59 PM
Pat Garvey   I would bet JB Weld would work wonders. It would...   Jun 14 2007, 08:40 PM
iamchappy   I'll check but I think I have one in good shap...   Jun 14 2007, 07:03 PM
Pat Garvey   I'll check but I think I have one in good sha...   Jun 14 2007, 08:37 PM
iamchappy   Sorry Pat mine is cracked just like you said I may...   Jun 14 2007, 10:47 PM
Crazyhippy   I'll look @ mine, but i bet it's cracled t...   Jun 15 2007, 12:52 AM
Eric_Shea   Naaaaaaaaa I think it's a good garage subjec...   Jun 15 2007, 07:49 AM
SGB   Is it unusual for the black RTV I used to fix mine...   Jun 15 2007, 10:49 AM
toomanyinkc   Where do they crack? I didn't see any cracks ...   Jun 15 2007, 06:24 PM
kwales   Ok guys... Glue basics.... A glue joint is no be...   Jun 15 2007, 07:46 PM
Pat Garvey   The cracks are small, maybe 1/32" wide, but t...   Jun 15 2007, 07:55 PM
r_towle   My friend had a leak in his 928 gas tank. He calle...   Jun 15 2007, 10:46 PM
RoninEclipse2G   My friend had a leak in his 928 gas tank. He call...   Jun 16 2007, 02:26 PM
Johny Blackstain   Pat- found this on eBay: http://cgi.ebay.com/ebay...   Jun 16 2007, 01:30 PM
Pat Garvey   Pat- found this on eBay: http://cgi.ebay.com/eba...   Jun 18 2007, 09:40 PM
914nerd   A couple of things: Fist off, if it melts, try rep...   Jun 19 2007, 10:48 AM
davep   Many of the plastics shrink as they age, hence the...   Jun 19 2007, 11:05 AM
914nerd   davep, I don't know what the material is on th...   Jun 19 2007, 12:41 PM
davep   You are correct. However, in the absence of a defi...   Jun 19 2007, 03:57 PM


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