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#1
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Pock-marked aluminum
Hi Everyone! Thanks for all the responses for my Bondo faring question.
After sand blasting my aluminum hull, the shallow areas of faring that remained exposed the bare aluminum of the hull and in some spots there was this indication of electroloysis or decavitation of the metal that can be described as "pock marked". Other than cutting out the damaged area and rewelding, is there any other approach to repairing the aluminum? John |
#2
posted to rec.boats.building
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Pock-marked aluminum
"EASI54" wrote in message ... Hi Everyone! Thanks for all the responses for my Bondo faring question. After sand blasting my aluminum hull, the shallow areas of faring that remained exposed the bare aluminum of the hull and in some spots there was this indication of electroloysis or decavitation of the metal that can be described as "pock marked". Other than cutting out the damaged area and rewelding, is there any other approach to repairing the aluminum? John -- EASI54 John, Is it a thin hull? That would make a difference between filling or replacing. When I worked with sub-launched weapons trainer shapes, we repaired deep pits (heavy cases on the shapes) with a product 3M made that is an epoxy with aluminum mixed in. Worked really well and never had any fall out. This may be the stuff we used but I don't remember the name- been a while. |
#3
posted to rec.boats.building
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Pock-marked aluminum
"EASI54" wrote in message ... Hi Everyone! Thanks for all the responses for my Bondo faring question. After sand blasting my aluminum hull, the shallow areas of faring that remained exposed the bare aluminum of the hull and in some spots there was this indication of electroloysis or decavitation of the metal that can be described as "pock marked". Other than cutting out the damaged area and rewelding, is there any other approach to repairing the aluminum? John -- EASI54 Don't know if I pasted the link and can't see my reply yet. http://www.tapecase.com/p.29.9/3m-17...-adhesive.aspx |
#4
posted to rec.boats.building
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Pock-marked aluminum
Hear is a tip. Whenever you experience pitted aluminum, the cause could be
is embedded salt, which is quite a corrosive. If so, the corrosion will continue even after recoating correctly with paint or powdercoating. The tip is to thoroughly wash the aluminum with vinegar, then water, let dry and then apply your paint or powder scheme. It works. Steve "EASI54" wrote in message ... Hi Everyone! Thanks for all the responses for my Bondo faring question. After sand blasting my aluminum hull, the shallow areas of faring that remained exposed the bare aluminum of the hull and in some spots there was this indication of electroloysis or decavitation of the metal that can be described as "pock marked". Other than cutting out the damaged area and rewelding, is there any other approach to repairing the aluminum? John -- EASI54 |
#5
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Quote:
http://www.alvinproducts.com/Products/Content.asp?id=5 Lab Metal seems like the right stuff for this aplication. Aluminum based filler that dries hard to the surface. Anyone use this? |
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