You may find this article helpful.

If the blade isn't sharpening as expected, ensure you are using the correct angle for your knife. Also, check the condition of your stone—if it’s worn out or clogged with metal shavings, use a dressing stone to clean it. Additionally, be sure to apply consistent pressure throughout the sharpening process.

Yes, each sharpening kit comes with a set of sharpening stones. Such as RX008,RX009 sharpener kit include a set of 4 RUIXIN PRO DSA Titanium-coated diamond stones, they are superior in quality.

If your stone is wearing down faster than expected, it could be due to sharpening against the blade's edge (referred to as “reverse edge movement”). This can damage the stone’s surface and cause it to lose its effectiveness. Always sharpen in the direction of the blade to preserve the diamond layer and maintain the stone’s performance.

· Clean with water and a soft brush after use.
· Let dry fully before storing.
· Use a dressing stone regularly to maintain performance.

It’s metal from the blade—normal during sharpening. Clean with a dressing stone.

With proper care, your stone will last a long time. Replace if performance drops significantly.

Yes, Ruixin Pro sharpening stones are versatile and can be used on a wide range of tools beyond kitchen knives. Examples include: Hunting knives, Fishing knives, Pocket knives, Axes and hatchets, Ice skates, Woodworking tools (chisels, plane blades, gouges), Surgical instruments, Scissors and shears. Just ensure you select the appropriate grit for the specific tool and always sharpen in the direction of the edge to preserve the stone’s surface.