Mark & Lisa Sletten wrote, "I'm fairly sick of trying to get consistant
batches of Micro.  Has anyone used this product?", that is Superfil.

I have used Superfil throughout, which in my case means a whole cartload of
it to hide my mistakes.  I have no idea why anyone would use micro for
filling, it is a pain to use and generally inconsistent between batches for
sanding.  The trick with Superfil is not to expect it to have any
significant structural strength.  If you have to use a thick application,
apply it in several layers.  Beyond about 3/16 inch (1/8th in exposed areas)
I applied a single layer of glass fiber on top of the dry Superfil, then
filled the weave with Superfil once it was hard.  Sanding is easy, and you
do not have to get a perfect surface if you are using their primer, it will
fill in fine scratches with 6 coats and sanding as per the instructions.

It is also useable in relatively high temperatures, when micro goes off too
quickly.

The only down sides are that it is fairly expensive, and if you store it for
a long time, both parts can get thick and are more difficult to mix and
apply (but it still works).

All round, I would recommend it strongly.  For more details, go to
www.polyfiber.com, or phone them at 1-800-362-3490.  I found their technical
support staff to be very helpful.

Jerry Fisher