194H Whetstone Knife Blade Sharpener Sharpening Stone Angle Guide, Chisel/Plane Iron Blade Sharpening Guide, Knife Edge Angle Finder, Knife Sharpening Trainer (Angle from 15° to 45°)

this is a really great piece of kit for anyone getting started or with experience. it helps keep angles sharp and precise with minimal effort. a must have for proffessionals and learners alike. its compact, easy to use, and will help you re-edge almost anything that uses a wetstone.will even work with metal objects being grinded or sanded with grinders or belt sanders but do that at your own risk as the items originally purpose is for wetstones, not beveling.this item is compact and folds, perfect for any campers or survivalists. definitely a must have for preppers and outdoorsman. may pick some more of these up for family at some point.the simplicity alone makes this a valuable ally for when sharpening or re-edging anything metal

This is an interesting little product, and overall I would say it has mostly helped me, so worth the small price.When learning to sharpen a kitchen knife, getting the angle right is one of the hardest bits it seems, and so vital to success.This helps you do that, albeit slowly and with a fair bit of hassle.It magnetically sticks to the knife, and helps you line up a consistent angle. So that bit is great.The problem comes when swapping to the other side of the knife, you have to keep taking this thing off and repositioning it, probably 30 times in an average sharpen.In a way it’s a design flaw I suppose, but I can’t imagine how they would change it.For me I’ll use it some while I learn the angles, but don’t want to get reliant on it either as it makes the process so much slower.So overall, good, and probably worth it - briefly - for a beginner

This makes knife sharpening on a wetstone a lot easier if your not a master at this already.Set the angle, attach it to your knife (Its magnetic) and sharpen the knife whilst watching the spirit level bubble.I tried guides and freehand before and could not get as good an edge on my kitchen knives as I can using this. Its simple and effective.Note, not ideal for small knives but standard chefs knives are ideal.

The idea behind this product is great to help aid your sharpening ability at a good cost. The product was well made and fitted to my larger knives well, though, didn't work very well with smaller knives. Additionally, the angle would slip regularly as it was not lockable, so did not work as well as it could.

If you’re looking for something that you can use during the sharpening process to hold the blade at the correct angle, this isn’t it. While it will sit comfortably on a wide blade, inertia will cause the bubble to fly backwards and forwards during the strokes and render it useless for that purpose. However the goal in learning to sharpen accurately and obtain a uniform burr quickly is keeping a consistent angle. A professional sharpener will tell you it’s about muscle memory, and in time you will just know what 15° or 20° feels like. This little gizmo is excellent for checking whether you have the correct angle mid-stroke.I use it at the start of the pass to see if I have set the correct angle by memory (usually I haven’t, but I’m getting better) and then during the pass I sometimes stop and hold the angle, and with my other hand drop the guide onto the blade to see if I’m maintaining the angle I started with. I’m getting better and this thing is helping. I recommend it.

Works pretty well. Only recommend this for larger knives.This thing is useless if you have anything of similar depth as a butter knife.You cannot easily secure it to the knife without touching the stone or falling off, as the magnets don't properly grip.Only made for Larger knives, but that's what most people would use. It's good at teaching you how to maintain a constant angle.You cannot 100% trust the angle measurements, but you can trust that once you set it to an angle, you follow the bubble and keep it centred. You can ensure you have kept a consistent angle throughout the process.I highly recommend this over guides between your knife and stone, i.e., ones that get worn down over time. Those guides are useless and don't teach you the proper knife-sharpening techniques. At least this device should last longer, and since it's free-floating with the magnet, it's versatile.My only grip is that it's annoying to have to unpeel it from my knife when I have to turn it over to the other side. I wish they made a double-sided one where you set it to 1 setting on both sides. It clicks onto the spine of the knife. That way, you can quickly swap to the other side, align the bubble, and sharpen it quickly.If they make one double-sided i will be sure to buy it

tried to use it but the instructions were poor so have bought a better one for less money

This is a good guide for free hand sharpening keeping an angle is easy with this