How to tell if there are wrinkles in the newly purchased fast cheap metal grinding disc?
1. High quality metal grinding disc is manufactured with instructions, which are detailed and should be viewed carefully.
2. Before using 180 * 6 * 22mm metal grinding disc, hang and tap with mallet. The sound should be clear and metallic! If the voice is stuffy, it will be dumb. Usually it is a collision in the transportation. It is absolutely not allowed to use.
3. conditional, of course, the best high-speed rotation experiment! Generally in the working speed of 1.6 times 1 minutes, not broken, proved to be eligible, you can use!