Instructions: 
1. Please try to choose operation indoors environment which without clutter phenomenon. The user should also concentrate on the operation to avoid an accident. If use it at outdoor, try to choose a quiet environment. 
2. During the polishing process, the workpiece should be kept parallel to the working water level.

3. The user's power should be evenly distributed when operation. Never suddenly heavy and lightly.

4. Avoid moving or slipping the workpiece during polishing.

Warning:

1. Must wear dustproof mask and goggles when working.

2. Never exceed the maximum safe speed.

3. Discs must be mounted correctly and used with metal guards and goggles.