When using a brick grinder, it is essential to check the performance of the machine to ensure safe and reliable operation:

1. Check if the brick clamping spring is too loose.

2. Check if the bearings of the working carriage wheels are loose.

3. Check if the inclined surfaces of the carriage's concave wheels are in a straight line.

4. Check if the carriage axes are parallel.

5. Check if the four contact points between the working carriage and the track are stable. If not, place some thin iron sheets under the carriage axle seats until stability is achieved.

6. Check if the brick clamps and base screws are loose.

Tools such as brick grinders and brick cutters do not completely isolate the cutting surface during use, so great care must be taken to avoid injuries and accidents.