FAQ

Mirror blade:
Replace the grinding wheel in order from coarse to fine (e.g. 180 mesh → 400 mesh → 800 mesh → wool wheel+polishing paste).
Each level must completely eliminate the scratches of the previous level.
Finally, polish the belt or cloth wheel with grinding paste.

Specific blade type:
Concave grinding: Small diameter grinding wheels or specialized concave grinding wheels are required.
Convex grinding: requires the use of a soft grinding wheel or sand belt, achieved through the arc-shaped swing of the wrist.
Suggestion: Beginners can first use a fixed angle sharpener to assist in practice.

The water pump is not working:
Check if the power connection is loose.
Check if the water pump is stuck by debris and try to disassemble and clean the impeller.
Use a multimeter to check if the water pump is powered on. If it does not turn when powered on, it may be damaged.

The water flow is too small:
Check the filter: Check if the inlet filter is clogged and needs to be cleaned.
Check the pipeline: whether the water pipe is bent, flattened or internally blocked.
Adjust the nozzle: Ensure that the nozzle is not blocked and adjust it to the appropriate angle and position.

Power supply voltage: Ensure that the input voltage is 220V ± 10%. If the voltage is too low, it will cause the motor to lose power.
Excessive load: Is the grinding pressure too high? Or is the grinding wheel severely passivated? Reduce pressure or repair/replace the grinding wheel.
Motor or controller malfunction: If the above issues are resolved, it may be due to worn motor carbon brushes (for brushed motors) or a faulty speed controller, and after-sales maintenance needs to be contacted.

Check installation and fixation: whether the machine is placed on a stable table and whether the foot screws are tightened.

Grinding wheel issue:
Whether the grinding wheel is installed with balance and whether the fastening nut is locked tightly.
Whether the grinding wheel itself is damaged or unevenly worn, it needs to be replaced.
Bearing inspection: The wear of the main shaft bearing will produce buzzing noise, which needs to be replaced by professional personnel.
Belt inspection: Open the back cover and check if the drive belt is too loose, worn, or stained with oil. Tighten or replace it appropriately.

Possible reasons: unstable voltage, motor aging, controller malfunction
resolvent:
Check if the power supply voltage is within the allowable range of the equipment (such as 90-250V)
Clean the motor and bearings
Contact after-sales service for controller testing

Regularly calibrate X/Y/Z axes
Check the wear of the cutting tools and replace them in a timely manner
Ensure that the workbench is flat and fixed