Take your boro to the next level! . Learn to turn tube designs inside out by disc flipping. This technique will open up a whole new world for the pendant maker. For advanced students only. Glass beads, marbles and sculptures are annealed in a kiln for long life. Finished pieces may be picked up the following day.If you are sensitive to dust and fumes, or if you have asthma or may be pregnant, check with your doctor and contact the studio for more information. [no picture]