blueman wrote:


I have been using System Three and it is a lot better than homemade
stuff mixing epoxy with sawdust. The components are non-sticky and are
kneaded together. Very easy to work and mold -- also the cured
consistency is easy to work, including sanding, drilling, etc.

Unless all you are using sawdust for cosmetic purposes such as to
match a color, as when filling nail holes, that's one thing.

If you are using sawdust as a filler for structural applications, you
are kidding yourself and wasting good epoxy.

Sawdust adds no strength.

OTOH, micro-balloons are very low cost, a 4 cubic ft, 30 lb bag is
less than $25.00.

Add as much as is req'd.

Lew