Place the barrel on the tumbler using the same procedure outlined in "Initial Tumbler Setup". tumbling times will vary based on the material being tumbled. The Golden Rule with tumbling jewelry is "Tumble briefly, check often". When in doubt about the durability of a metal, stone or glass, check the tumbler frequently. Tumble jewelry for 30 minutes, checking as often as every 10 minutes. Tumble longer if the desired finish has not been achieved (up to 2 hours). Tumbling for longer than 2 hours can result in over burnishing and you could lose detail in your pieces.
- Porous stones such as turquoise, precious stones such as rubies, emeralds, and pearls are examples of items that should never be tumbled.
- Avoid tumbling brass and bronze with silver or copper, especially for extended periods of time to prevent discoloration of your pieces.
- Silver can be tumbled for long periods of time, sometimes even overnight. This gives chainmaille a silky smooth finish.
- Copper will start to oxidize if tumbled longer than four hours. To keep it bright and shiny, tumbling for shorter periods is recommended.