Hi Group
A couple of notes on filling with Expancel:
** I find that after wetting out the surface, I let my Aeropoxy cure
until it's very very tacky, this way when you try applying the very
very dry mix of Expancel, you can get it to stick instead of rolling
off
** I find that you are better off mixing not too much Expancel at once,
the heat from mixing kicks off the Aeropoxy quicker, helper or not I will
weigh out Aeropoxy, just not mix it in several cups (I use between 8 and
16 oz paper cups), then mix up the Aeropoxy and keep on adding Expancel
until it's as dry as bread dough, Nev taught me that if you get it
dry enough it sands like Balsa, I never had much success getting it to
stick without rolling off and sand like Balsa until I found the secret to
letting the thin pure epoxy begin to cure and get very sticky
** Invariably you find yourself taking too long applying the very dry
Expancel and it hardens a little and is very difficult to get it how you
want it, two tricks both use heat, 1) heat up your spackle knife with a
heat gun and it makes things slide very nice, often I will do this for
final passes after you get what you want applied 2) You can add some heat
---From the heat gun to an area that is just plain being uncooperative
** Like many have mentioned if you don't fill enough, you get
subsequent rings and batches that don't sand the same. There is a
learning curve, but it takes a while before you convince yourself to fill
it a lot more than you think you need to, then fill some more. Especially
on difficult to sand compound curved areas, the "don't use any
more spackle than you need to" mentality comes out, in areas like
that, I will 75% fill with dry Expancel (but not quite as dry as when
filling very large areas), then let the Expancel begin to cure a bit so
it kinda holds it's shape, then give it a second pass fill after
heating the first layer a little.
Ron P.
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