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" 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.

"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

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

1/4 inch thick. Check out this site:

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?