Important Safety Information
Always wear protective equipment, including safety glasses, when operating the nail grinder. Keep the grinder away from the pet's face and eyes. Do not use the grinder on any other part of the pet's body. Store the grinder in a safe, dry place, away from heat sources and out of reach of children and pets.
Product Overview and Features
The Casfuy N65 Dog Nail Grinder is designed for safe and efficient pet nail care. It features multiple speed settings, various grinding ports, and integrated LED lights to enhance visibility during use.

6 Adjustable Speeds: The grinder offers six adjustable grinding speeds (7000 – 12000 RPM) for precise control. The last used speed is saved for convenience.

3 Grinding Ports: Features three distinct ports: a small port for small pets, a medium port for medium-sized pets, and an open grinding area for larger dog nails.

2 Built-in LED Lights: Integrated LED lights illuminate the pet's nail, helping to identify the quick and prevent over-grinding, ensuring a safer grooming experience.

Low Vibration and Quiet Operation: Operates at a low noise level (≤45 dB) with minimal vibration, designed to keep pets calm during grooming.

Advanced Diamond Bit Grinder: Equipped with a durable diamond bit for precise trimming and smoothing of nail surfaces.
Setup
Charging the Device
Before first use, fully charge the nail grinder. Connect the provided USB charging cable to the grinder's charging port and to a compatible USB power source (e.g., AC adapter, laptop, power bank, USB outlet).

The device can be charged via various USB power sources. A full charge provides up to 4 hours of operation.
The charging indicator light will show the charging status. Once fully charged, the light will change (refer to specific indicator behavior in the product's quick start guide if available, otherwise assume standard behavior).
Operating Instructions
- Prepare Your Pet: Ensure your pet is calm and comfortable. Introduce the grinder slowly, allowing them to get used to its sound and vibration before actual use.
- Select the Correct Port: Choose the appropriate grinding port based on your pet's nail size. Use the small port for small pets, the medium port for medium pets, and the open grinding area for larger pets.
- Turn On and Select Speed: Press the power button to turn on the grinder. Use the speed adjustment switch to select one of the six available speeds (7000-12000 RPM). Start with a lower speed and gradually increase if needed.
- Grind the Nails: Gently hold your pet's paw and carefully place the nail into the chosen grinding port. Grind each nail for a short duration (e.g., 5-10 seconds) to avoid overheating and discomfort. Use the built-in LED lights to clearly see the nail and avoid the quick.
- Check Progress: Periodically check the nail length and shape. Repeat the grinding process on all nails as needed.
- Turn Off: After use, turn off the grinder by pressing the power switch. The last used speed setting will be saved.
Tip: For best results and to prevent stress, introduce nail grinding gradually and offer treats and praise to your pet.
Maintenance
Cleaning the Grinder
Regular cleaning ensures optimal performance and hygiene.
- Turn Off Device: Ensure the nail grinder is turned off before cleaning.
- Remove Plastic Sheath: The plastic sheath covering the grinding head is removable. Gently twist or pull it off.
- Clean Grinding Head: Use a soft brush or cloth to remove any nail dust and debris from the grinding head and inside the sheath.
- Reattach Sheath: Once clean, reattach the plastic sheath securely.
- Wipe Body: Wipe the body of the grinder with a clean, dry cloth. Do not immerse the device in water.

The removable plastic sheath helps collect nail dust and simplifies cleaning.
Troubleshooting
- Grinder not turning on:
- Ensure the device is fully charged.
- Check if the power button is pressed correctly.
- Grinding performance is weak:
- Clean the grinding head and remove any accumulated nail dust.
- Ensure the device is fully charged.
- Try a higher speed setting.
- Pet is scared of the grinder:
- Introduce the grinder gradually, allowing the pet to get used to the sound and vibration without actual grinding.
- Use treats and positive reinforcement.
- Start with very short grinding sessions.
Specifications
| Brand | Casfuy |
| Model Number | N65 |
| Power Source | Rechargeable Battery |
| Battery Life | Up to 4 hours (on full charge) |
| Max Rotation Speed | 12000 RPM |
| Noise Level | ≤45 dB |
| Package Dimensions | 20.1 x 10.3 x 4.5 cm |
| Weight | 299 grams |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your product packaging or visit the official Casfuy website. Keep your purchase receipt for warranty claims.





