I have been using the blade grinding attachment on my Ken Onion Edition Sharpener for several years now. I prefer it over the standard attachment that came on the sharpener. The standard one could damage/scratch the side of your knife when drawing it through. When you pay hundreds of dollars for knives you don't want to damage them. A couple years ago I also bought a "Bess" tester. It takes the subjectivity out of whether a knife is sharp or not. Just measure sharpness before sharpening and after to see actual results. See pics

So easy to use. Really cleaned up my blades and made them better than factory sharp! Love it.

Received it today and couldn't wait to use it. I followed the instructions for installing and setting up the attachment. I'm very pleased with it and wish I had gotten it sooner. I do strongly suggest starting with cheap knives as there is a learning curve. I am very happy with my purchase.

Honestly the blade grinding attachment is so awesome, it's the only tool you need. I received, as a gift, the Ken Onion sharpener and the blade grinding attachment. While the sharpener is great, it has a few cons such as being more difficult to use on certain shape knives, thumb studs, handle styles, etc. It can also scratch the sides of your knives when pulling them along the angle guide...Especially with kitchen knives. The abrasive dust collects on the angle guide and scratches the side of the blade. The blade grinder in my opinion is by far the better option for getting your knives extremely sharp! Yes there is a learning curve, but I feel it is even easier than the regular sharpener to master. If you are proficient in using bench stones, then you will REALLY LOVE the blade grinder attachment. This is by far the best tool for sharpening I've ever purchased! It cuts so much time off traditional bench stones and I feel the short pulley setting is close enough for those that want a flatter grind similar to using a bench stone. Now that I'm perfecting my techniques I can sharpen 6 knives to razor sharp edges in the time it took me to do one knife on my high end bench stones. This tool is fantastic once you learn the tricks. The only improvement I would suggest is greatly expanding the instruction manual specifically for the blade grinding attachment. I suggest including more detailed instructions for machetes, hatchets, axes, etc. With regards to belt selection and angles. I had to research and learn/figure out most of this on my own but it takes this tool to pretty much professional level!! This will be my only way of sharpening from here on out!! I cannot stress how fast, easy, and consistent this has made blade sharpening for me. I own tons of knives and this tool has been an absolute joy to use. I've even started sharpening neighbors knives because mine are all finished. Expand that instruction guide and this will be the perfect setup!! Thanks Work Sharp!!! Your biggest fan!!!

The only thing I have issues with is it doesn't lock into the base unit and hangs free when installed. Unlike the Ken Onion sharpening cassette. I guess its ok, but seems odd it isn't more secure.

Bought the ken onion work sharp from cabelas before Xmas used it on a few kitchen knives with various results watched a few youtube videos on this add on and was sold. Find it a lot easier to use the the standard kit.

Marcel C. You are using way too much pressure on the belts. You just need very light pressure at the most and really no pressure for most sharpening.

Phenominal attachmentIve been using Ken Onion sharpener for about 5 years now. Ive always had sharp knives but this blade grinding attachment puts sharpeness to a whole new level. As long as you have a steady hand and can keep blades flat you will be impressed with how sharp blades will get. It takes a little longer but surgical scapel will be in comparison of a cheap knife using this attachment.