Gross into fine

earthworms

rake

rake is the closest yet.

Originally posted by Roger007
rake is the closest yet.

Sledge hammer?
One that makes gross stones into fine sand?

Seive or dirt filter

You are tantalisingly close.

Originally posted by Roger007
You are tantalisingly close.

A saw?

a strainer?

very very close indeed.

Originally posted by Roger007
very very close indeed.

A sifter, strainer, sorter, filter, rake or hoe?

Or a thresher, harvester or some such thing. Just thinking that 'fines' are also the bits of the corn kernal which are knocked off during harvesting. This is really bugging me.

eyeliner, mascara & lipstick

nope.
feastboy is the closest so far.
some of his suggestions are very close to the answer.