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if you are looking for a hack-job solution... Posted by Snowmobile [Email]  (#686)  [Profile/Gallery]
(more from Snowmobile) on Wed, 13 Nov 2013 10:07:33
In Reply to: Modern autobody work..., GFW3pedals  [Profile/Gallery]
, Wed, 13 Nov 2013 07:25:49
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where this is a beater, I've had some success on our beater repairing cosmetic rust in cavities (several fist size holes in fenders etc) by spraying the cavity with expanding foam and then trimming and glassing over that. if the hole is huge already, metal mesh over the outside before the foam... If the metal is rusting from inside out and already thin but you don't yet have a large hole (maybe a tiny one), filling the cavity with maximally expanding foam may prevent water from getting in there for the winter so you can resolve it properly in the spring... As Adam says, the only real solution is to cut out all the rust and weld in, but if this is an interior cavity full of heavy corrosion, it will be a massive job. what you see is the tip of the iceberg. If most of it is really solid with just a few places bubbling and no holes, you may still make it last the winter by oil spraying the cavity (drill a hole and spray). All our cars get oil sprayed annually through plugs accessible inside the car... they do not rust from the inside once you do that... though, once you oil spray, the mono foam may not stick well anymore...
if it is rusting from the inside, how will you por15 all the inside? especially given the lengthy process for it (eg must reach "bone dry" status numerous times + temperature requirements)... POR15 is amazing stuff though... oh, another tip - POR makes a putty that is black and seems to work in coolish temperatures... I just used some on our winter beater's fender... no long term data yet, but looks like good stuff.
Getting late to paint, but foam/glass/epoxy should work... just get a heater and go nuts on this the first warm day you get now!
If it is structural, the only "solution" to avoid scrapping the car is to weld new metal in.
->Posting last edited on Wed, 13 Nov 2013 10:12:05.
, Wed, 13 Nov 2013 07:25:49
, Sat, 16 Nov 2013 08:47:48, Sat, 16 Nov 2013 10:27:55, Sat, 16 Nov 2013 18:13:41, Wed, 13 Nov 2013 10:07:33 <-- Viewing This Message, Wed, 13 Nov 2013 08:32:35, Wed, 13 Nov 2013 18:19:43, Thu, 14 Nov 2013 09:18:15, Thu, 14 Nov 2013 10:20:40, Thu, 14 Nov 2013 17:00:28, Thu, 14 Nov 2013 20:23:01, Thu, 14 Nov 2013 20:15:20, Thu, 14 Nov 2013 20:24:44, Fri, 15 Nov 2013 03:50:33, Thu, 14 Nov 2013 20:30:53, Fri, 15 Nov 2013 06:19:30, Fri, 15 Nov 2013 07:32:49, Fri, 15 Nov 2013 12:57:26, Fri, 15 Nov 2013 13:42:55, Fri, 15 Nov 2013 15:06:24, Fri, 15 Nov 2013 09:46:55, Fri, 15 Nov 2013 11:00:18
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