PRO Diamond and Ceramic Retractable Sharpener, Kitchen Knife Sharpener for Straight, Double-Bevel Blades, Easy to Use, Three-Step Knife Sharpening Process

I have been doing my own knife sharpening as long as I can remember back to boy scout days. i am now in my 7th decade and have used a lot of hand sharpening tools, Smith, Lansky, chef's choice, worksharp,arkansas stones, diamond stones etc. For just out of the box, something recognizable in a kitchen drawer and used by those who dont sharpen knives as a hobby or profession this one made in Japan does as nice of a job as I have seen with 3 simple steps. For those who found this item bereft of sharpness I think they got a lemon or it was broken in some way. I did my wifes whole drawer of knives over christmas as well as my sis's; dependable, straightforward. The price was worth it when i sat down with my two adult daughters and they got the hang of it easily. So many features of so many sharpeners, this is a nice conglomeration from the grit on the stones, the stability, the angle of the sharpening surfaces. hell even the non slip inserts on the feet that hold it in place on the table top. Well made but light weight and the surfaces are kept shielded from kitchen drawer tool impacts by the sliding sheath. Well Done KAI

So when I first ran my Shun knife through it, I’ll admit I was scared. The first pull when I heard and felt the grinding, I had shed a tear. But with the second and third stages it was a lot smoother. The end result was my blade was as sharp as I first got it. Highly recommend.

Excelente producto, muy práctico de utilizar, deja los cuchillos bien filosos, cumple con todas las expectativas que tenía, y lo puedo llevar a donde quiera por el tamaño.

Le dio vida a mi shun de nuevo

I purchased this product in 2020. This tool has three channels. Channel 1 consists of two diamond embedded plates which are positioned in a V at a sixteen degree angle on each side. These diamond plates will grind steel as the knife is pulled through while maintaining the sixteen degree bevel found on Shun knives. Channel 2 consists of a wheel which I believe is ceramic, and this wheel turns as the knife is pulled through it. Again, the wheel has an indentation in it that maintains the sixteen degree bevel. Channel 2 does not take any steel off. It simply hones the knife's edge so that it is perfectly aligned. Channel 3 consists of two ceramic rods, positioned in a V at sixteen degrees, and these rods are designed to polish the edge of the blades. If a knife seems to be dull, all one needs to do 98% of the time, is hone the knife, which means to realign the edges at the blade's apex. Shazaam, the knife is sharp again without removing any steel! And this product is perfect for that, just using the 2nd and 3rd channels. If you're using this for your Shun knives (recommended and approved by Shun), the second and third 16 degree honing channels will do a perfect job and will resolve your knife problem almost every time. Channel 1 can be used to take steel off the knife as well, but I rarely use that since I'm not a fan of removing steel when a simple hone will do the trick. I like the tomato test. If one suspects a knife is getting dull, place the edge of the knife on a tomato, and without pressing down, pull the knife back, allowing the weight of the knife to do all the work. The knife blade should effortlessly pierce into and through the tomato skin immediately or almost immediately. If the knife doesn't pierce the skin easily and quickly, or wants to slide sideways, the knife needs maintenance. By pulling the knife through channel 2 a few times, followed by pulling through channel 3 a few times, try the tomato test again. The vast majority of time, you will find the knife is razor sharp again. Like magic! Another nice feature with this product is that after significant use, if the ceramic rods begin to wear, it can easily be disassembled, and the ceramic rods used in stage 3 can be slightly turned and repositioned, which will cause stage 3 to work like new again. This can be done multiple times by twisting the rods, and also by inverting the rods. The same can be done with stage 1 by inverting the diamond plates. So easy!