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A couple of years ago at Oskosh I purchased a small lot of Superfil (what I
could take back to Australia in my case). We found it very good and easy to
mix and use.  We also did some tests on the lightness of it and found that
carefully mixed epoxy and micro end up about the same density. We would have
used it if we could have purchased it locally.
We are currently painting the 0-200 with Smooth Prime using the roller
technique and are extremely pleased with the way it covers pinholes and how
straight forward and easy the whole process is plus the lack of fumes to
worry about. Yes Poly-Fiber make both product and you  can use Superfil over
the top of the smooth prime to spot fill.

Chris Moore

[Thanks for the verification, Chris... my only complaint with 'dry'
micro (it needs to be mixed that way to keep the weight down) is that
it tends to be a bit grainy and difficult to trowel on.  I wonder if
the SuperFil product actually uses some additional filler to smooth it out?
Seems to me that the inclusion of either talc or cab-o-sil as part of a
dry micro mixture might perform a bit better.  Has anyone tried this?
If not, I may give it a shot myself and report the results here when I
have some.  <Marv>]