RX-008 Fixed-Angle Knife Sharpener Kit System with 12 Whetstones, Stainless Steel Professional Precision Adjust Knife Sharpener Tool, Complete Angle Adjustable Knife Sharpening System

Love using this to sharpen up the kitchen knives or pocket knives I have. Easy to set up and take down. And pretty easy to use .

Fiddly to set up and the screws don’t hold things in place well. Once you have it set up some extra tightening to keep it in place helps. Could have used some finer threads and better machining . The instructions are a bit hard to follow regarding the technique but with a bit of googling and you tubing I found some guides with varying techniques, pick the one you like . The coarser stones didn’t last long at all, maybe my fault . The clamp for the stones is also pretty weak . Still got very very sharp knives , seriously I recommend a pair of cut proof gloves and some band aids . I’ll probably invest in some long diamond stones that can be fitted in , later to replace the coarse and medium stones.

I never get paid for reviews or receive discounts or free products. And I only write them if the product is either great or terrible. Even though there are some issues with this sharpening system (I also bought the upgraded ball attachment), it still is a great bargain. Before buying, I looked at several YouTube videos that reviewed both this product and the much more expensive one that obviously was copied. One reviewer trashed this system due to the quality of the sharpening stones. Sure enough, I barely got one kitchen knife sharpened before the first stone (rough 80 grit) wore out. Look at the first picture to see. Undaunted, I milled up a bunch of plywood paddles with a 45 degree angle on one end to fit into the stone holder. I sprayed contact cement on them as well as various grades of sandpaper, bonded them, and cut them out with a razor knife. By using typical 1/4" plywood, the thickness is almost exactly that of the stones, so I was able to use both on the knives. I soon found that the starting 80 grit wore out the easiest, probably because the first pass usually has to remove the most steel from the knives as it cuts the initial shape. I also quickly learned NOT to saw back and forth because that cuts into the sandpaper. Rather, with both these sandpaper paddles AND the stones, it is best to PULL across the blade outward, making long strokes from tip to middle and heel to middle. By using a free phone app for angle measuring, you first calibrate zero degrees by holding the phone on the plane of the knife holder, and then checking the angle on the stone or paddle as it lays on the knife. I start with 15 degrees. A 16 degree angle means it cuts a STEEPER angle. A 14 degree angle cuts a thinner and sharper edge, but you would remove more metal and the edge doesn't last as long. You know you are doing it right by starting with making a line along the edge with a Sharpie marker. So, when you make that first cut, it is important to note that the Sharpie line disappears at the edge. If it doesn't, you will need to either grind more metal or make the angle steeper. While I found the rougher grit stones inadequate because they wore out quickly, the finer stones (400 and up to 10,000) seemed okay. So, I used my sandpaper paddles of 80, 120, 220, 320, & 400 and then switched to the finer and harder stones (400, 600, 800, 1000, 1500, 3000, 6000, and 10000). One trick I used was adding a small 1/16" spacer cut from a piece of Plexiglas that was placed above the bottom stop, thus raising the angle slightly steeper. I used this once I got to the 1000 grit stone, creating a slight micro-bevel that gives a little more long lasting strength to the sharp edge. You can see this on pictures 3 and 4. By the way, you need to soak the stones in water before using. And, after each knife sharpening, you need to clean off the fine metal waste. I just keep everything in a small bucket of water. To clean the stones, I use one of the softer (inadequate) stones as an "eraser" by simply rubbing the wet stones together. It is good to keep a screwdriver and pliers handy to make those adjustments solid on the jig. The last pic shows my worktable with the paddles and finished knives. Now, it is important to educate the family about the newly sharpened knives. I'm a believer that the sharp knife is actually safer, as long as you know it's sharp to start with.

I was looking for a knife sharpener that would sharpen our expensive kitchen knives with a very sharp, nice looking edge that was easy to use and didn’t cost $1000. This was the best sharpener I could find for the money. There was an upgraded version seen on YouTube, but I could not find any place to buy it. There are some good ideas in this design, but there are a couple things that where not acceptable to me. You would think you could just flip the knife over by taking advantage of the of the nicely designed rotational mechanism. The only problem is the plates that hold the knife do not hold the knife symmetrically. This was known by the designer because in the directions you are directed measure and reset the angle. That is a lot of messing around and in my opinion defeats the advantage of being able to rotate the knife to the other side. The more handling you have to do with the knife mounted, the greater the risk of damaging the cutting edge of the knife and increases the risk to cuts by this knife edge that points out towards your body. In the description the device is stated as having an accuracy of +- 2 degrees. This is exactly the angle error when you flip the knife over. That is why you have to reset the angle in an attempt to reduce this error. But think about that a minute. So, if you are trying to sharpen your knife to ~20 degrees and you do not reset the angle when you flip the knife over, then one side will be exactly where you set it and the other side will be ~4 degrees off. So that will end up as 20 +0 and -4, or you could call it 18 +-2 degrees. That is a huge error in my opinion. In reading the other reviews it appears the stones can fall out if you do not have them secured perfectly or if you secure them to much you could damage them. They do wear out with use too. I did not use this so I can not comment to much on this. Refer to other reviews for this. I start to think that if I used this, then I would not be able to return it. And I would probably never want to mess with it in the future. And even if I did use it in the future, I would be years from now and I question availability of replacement stones when I need them. There is a much better American made sharpener you can buy, but it doesn’t make sense to buy unless you are sharpening knifes as a job or you are knife expert/collector. This device is as close as you can get at a reasonable price. I may just buy a simpler sharpener that is easy to use but will not be as sharp as it could be. If the design was improved, I would buy it even if it was at a higher cost that would be less than $100. There are some counter sunk screws on the clamp that holds the knife that where not completely counter sunk, where loose and it looked like the holes where not centered exactly. There was also a missing screw in the shipment. Also, when I tightened the screw that sets the angle on the vertical rod, it comes loose if you twist the sliding rod to far to one side. I would spend time setting the angle only to have it come loose and I had to set the angle up again. Then included a locking nut that goes below it, but that was the screw that was missing in the package. It appears to me this locking nut was added for a reason .. to fix the problem of things coming loose. I think the redesign that is not available fixes some of these issues. Where can I BUY IT!!

My passion is cooking and I have more knives than I care to count that I've purchased over the years. I've used every sharpening gadget on the market, manual and electric. This one blows them all away in its simplicity and accuracy. Simple to set up and use for sure. Brings the edge of older knives back BETTER than when I first bought them. I find I can go one step more and bought a letter strop to finish them but they are still razor sharp at that point. My only slight complaint is that they should have included some sort of case to hold all the stones. They are thin and I can imagine they would break very easily if one wasn't careful. Even so, worth every penny if you want a sharp knife.

Take you time setting up and you will have fantastic results.

Ya que lo armas, es excelente!!!

Pierre fragile

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