How to Clean a Mandrel Before Making Beads
- 1). Fill the tub part-way with warm water and add a few drops of dish soap.
- 2). Set the mandrels in the water and leave them to soak for a few minutes.
- 3). Scrub each mandrel with the small wire brush to remove all the bead release and small glass chips stuck to the metal.
- 4). Remove the mandrels from the water, rinse them in clean water, and let them dry completely before the next use.
Source...