Casfuy Dog Nail Grinder Upgraded – Professional 2-Speed Electric Rechargeable Pet Nail Trimmer Painless Paws Grooming & Smoothing for Small Medium Large Dogs & Cats(Dark Blue) by Casfuy

This is a wonderful little tool. It’s affordable, functional and quiet. Unfortunately my Great Dane doesn’t want her nails done so I haven’t really been able to use it on anyone but myself yet. It’ll grind some nails down quickly, for sure.

Efficace et rapide, pour l’instant je peux faire mes 3 chiens sans recharger.
Les chiens n’ont pas mal et ne sont pas effrayés.

The Casfuy Dog Nail Grinder has been a game-changer for grooming our dog at home. The two-speed settings allow precise control, making it safe even for anxious pets. It’s rechargeable, lightweight, and easy to handle, and the quiet motor keeps our pup calm during trimming. The grinder effectively smooths nails without splintering, giving a clean finish every time. A durable, well-built tool that makes nail care much less stressful for both pets and owners. Highly recommended!

Fonctionne très bien, pratique pour mes carlins, shitsu.
Très peu de bruit, ils en ont moins peur que le coupe ongles traditionnel.

I gave this product three stars. The reason being is because the product does file pets nails relatively less stressfully, as when a dog nail clippers are in use- if done safely and properly. The product does seem to be of relatively good quality/materials.

That being said, my concern lies in the fact that there are virtually zero safety precautions for material or hair entanglement regarding the presence of any automatic shut off when increased resistance is met. Most other products with rotating components (I.e. handheld fans, vacuum cleaners) can detect if a snag is detected at which point the motor stops spinning and shuts off until the device is cleared of snags and restarted.

In this situation, a single strand of my hair came in contact with rotating end of the dog nail grinder, and it started twisting until an entire chunk of my hair became fully entangled, which happened over the course of approximately 1-2 seconds.
The device continued spinning and spinning and I could not get the sliding on/off switch to slide off because the device continue to spin in my hand. The device was very hot, almost smoking, because of the amount of hair entangling, but it did not turn off.

This had me greatly concerned, not just for myself, but for my dog.

Because my dog is a long-haired mixed breed (Bernedoodle, or Poodle and Bernese Mountain Dog mix), her hair could easily become stuck in the twisting mechanism. Especially because she is also a large breed, meaning we cannot use the included plastic nail guard due to the size and shape of her nails. At which point, this would be much a more painful and traumatizing experience than just using a regular nail clipper, and I do not want to traumatize her… or myself.

I feel like if the rotary mechanism senses a snag or a tangle in the rotating bit, it should have a safety feature that automatically shuts it off so that people and/or their pets do not have hair (or other loose articles) incidentally damaged, burned, ripped out, or removed.

The reason I gave 3 stars instead of 1 is because I understand that this issue is partially my fault and in the future, I would tie my hair back fully if I were to use it again. Also it’s not an entirely useless product, but can only be safely used (in my opinion) on smaller, shorter haired breeds.
With that being said, I am glad this happened to me rather than my pet because I was able to easily cut the affected strands of my hair that were burned and frayed off and am physically unharmed, although my hair does look very strange now since this large strand was in the very front. Regardless, I take some responsibility for the incident, however, I don’t want my situation to happen to any long haired pets in the future and hope the company makes some safety adjustments to the product.

One thing that could significantly improve safety would be to include an overall larger grinding bit that also includes a larger plastic safety guard with a bigger opening for large breed dogs, so that their nails can be filed safely with decreased risk for tangling, ripping, tugging, etc.
As mentioned, I was not able to use the provided guard that comes with the product because my dogs nails are simply too wide/thick to keep the guard on. If you have a small pet with thinner nails, the guard would likely better protect you/your pet or reduce the risk of entanglement by probably 90%.

In conclusion, I will likely not use this on my long haired dogs, but I would be willing to try the product again on my short haired, smaller dog (Boston terrier) because the risk for entanglement is minimal to none (for the pet), and I can use the file guard that is included with the product. Of course, my hair will be tied back next time…

I hope this helps someone make a more informed decision on purchasing this product.