Gather:
Each time the glass blower gets glass from the furnace it is called a
"gather". Between each gather the glass is blown, cooled, reheated, shaped,
etc. until the artist is satisfied and then he will take another gather
of glass to encase what he was just working on. The total number of gathers
will determine the final size of the piece.

Cold
work: After the hand blown glass object has cooled and is removed
from the annealer, there is a still lot of work to be done on it.
There will be a mark on the bottom of the piece where it was broken
away from the pontil.

These
marks are polished out using a series of diamond disks of different
grits cooled off with water.

Annealing: The
process of slowly cooling down the finished hand blown glass.