On Mar 16, 3:45 pm, "Steve Lusardi" wrote:
NEVER, ever use automotive fillers. They are hygroscopic and will fail with
certainty. Use epoxy and micro balloons for filler. Mix to the consistancy
that will not sag. Do not over fill. Plan to fill more than once. Use
Stanley composition files when the mix is rubbery to get close. Fill again
and finish when cured with orbital sander. Be careful. When cured, the
filler is harder than the aluminum. Don't forget to use an etching primer
for aluminum.
Steve

"EASI54" wrote in message

...



I have a 1988 custom built aluminum hull sloop that I had sand blasted
below the water line to remove years of antifouling paint buildup, and
to start fresh with new and also see what condition the hull would be in
and if it would warrant any metal work. For the most part, faring
compound still remains and I can see the dings and dents that it has
received over time. I would like to use Bondo for the deep fills that
I probably won't be able to push out(1/4 inch alu thickness) and then
use a good epoxy faring compound for the top. Would this approach be
acceptable prior to finish coating or would there be a better way.

John

--
EASI54

Good epoxy is a joy to use compared to Bondo although it is more
expensive.