[Speedslug]

Loren Stump, the famous murrini artist, suggests the water method for that reason about the dust.

He said on one of the Corning Museum of Glass videos that you get a more uniform size
with less dust using the torch and water technique and what dust there is winds up going on to the lawn with the water as its poured off the top.

My plan is to use jars before they wind up in the recycle bin and pour off most the water and then up end it over paper towels or a coffee filter to dry on the top of a warm kiln.

Oh and don't use the same jar for different coe of glass. The incompatibility will show up just as you are admiring your work and it will turn to dust before your very eyes. He said it looks just like the disintegration scene they use in the science fiction movies. I think it was at the 40 minute mark in the class he was teaching.