Work a Jigsaw Puzzle
When he starts creating a piece, he makes a 20 by 30 inch watercolor paper drawing and pins it up on the wall in front of the furnace for the workers to see.
The colors he uses are supplied by cottage industries in Germany, Romania, and New Zealand. The colors come in the form of 2-pound rods, powder, or ground-up color which resembles sand. The color is added during the glass making process.