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Hapstone M2 Knife Sharpener

Hapstone M2 Knife Sharpener

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Product Description
You could take your kitchen knives, fixed blades, and folders to the shop to get professionally sharpened, but it gets expensive over time. Take matters into your own hands with the Hapstone M2: an innovative sharpening system that makes it easy to put a pristine edge on all your favorite knives Read More

Customer Reviews

4.0
(5 reviews)
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GBrake
4
Oct 17, 2019
checkVerified Buyer
It works
I bought this so I could put a more consistent, finer edge on my EDC knives but now use it for all knives as it provides for a more consistent, finer edge. The stones it comes with are adequate but I ended buying additional silicon carbide stones from gritomatic, up 8000 grit for a more polished edge. The new stones work brilliantly, and now all my knives are scary sharp. I would like to see more adjustability in the way it holds a knife. The two outside prongs are fixed together, with the center prong being independently adjustable from the outside two prongs. It would be better if all three prongs were independently adjustable. The magnets work well enough, but larger knifes require careful positioning and it is sometimes necessary to put a hand on the blade to support it. The M2 does what it is supposed to do and does it well. Durability is the only question at this point. If it stands the test of time, will have been money well spent.
(Edited)
Recommends this product? Yes
Stymeron
2
Sep 24, 2019
checkVerified Buyer
Just okay
The magnets are nowhere near strong enough to hold a knife in place. A flaw in the design of the blade alignment stops is that the stops are now wide enough. The only way to make this work is to ensure the black stops are not angled at all, and use the center orange stop to set the blade position so the curved blade is perpendicular to the stand for both sides of the blade. Unfortunately, when you do that the tip of the blade, from the orange stop forward, is unsupported and moves very easily. The only way to make this work is to hold the knife handle at all times. That means sharpening left handed half the time. It sharpens knives, but is not very user friendly or easy to use. A tip that helped is to lay the orange stop over the heel of the blade and tighten, thereby using it as a clamp for holding the knife in place securely. Unfortunately then only the black stops are in play so the blade won't sit perpendicular to the stand resulting in a range of sharpening angle as you move down the blade.
Kavik
5531
Sep 12, 2019
checkVerified Buyer
Seems okay, but lots of room for improvement
First off, this would be a 1 star review for customer service. I'm unable to review the diamond stones because I never received them, and I'm not able to give a long term, in depth review because this is being returned due to incorrect advertising that Drop refuses to take responsibility for. For the record, the unit being sold here is the Revision 1, as listed in the specs. What that means is that any mention in the specs and description about this unit having a linear ball bearing are false. That said, on to the unit itself: I really liked the simplicity of this idea in theory, but it needs some work.  The two biggest issues being the placement of the magnets, and the slop in the slots of the black and orange blade stops. I did a brief test before being told a return was my only option to resolve my complaints through Drop. Using an old high carbon kitchen knife with a 6" blade and wooden handle. Not a very heavy knife, and should stick to the magnets better than a thinner stainless blade will. During that test i could not keep the blade still without holding onto it the whole time, and even then it wanted to pivot on the middle magnet. I saw a YouTube review saying he could sharpen without holding the blade, i have no idea how, it's just not possible on mine. I feel like it might have worked better to use one long rectangular magnet, or at least more magnets with no gap between them. If you wave another magnet over top of these you can feel it pushing away in the gaps (i forget the term off hand, but there's a wave of alternating polarities when you have a row of magnets spaced out and all pointing in the same direction) The orange and black blade stops for alignment are potentially a pretty brilliantly simple idea...but there's unfortunately way too much play in these for them to be accurate without being extremely careful on every setup. Carefully aligned (using the edges of the magnets as a visual reference):
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Vs how much slop is possible:
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On a 6" blade, targeting a 20 degree bevel angle, centered on the orange pin, the difference in distances between the heel and the tip of the blade is enough to throw it off by over a degree and a half when in the position in the second picture above. (19.67 to 21.30 from heel to tip) Other room for improvement: It doesn't take much pressure at all to get this thing to rock forward when the arm is fully extended and at a steep bevel angle. And even with the rubber feet, it's light enough to slide on a smooth surface. I would've liked to see this come with pressed in rubber grommets rather than screwed in rubber feet, so users could easily bolt it to a bench, or a heavy base plate, if they so choose. Lastly, the degree markings on the vertical rod were pretty damn close to right on the nose with new stones.....IF you measure just to the end of the platform with the magnets. Unfortunately, that's not where the edge of your blade will ever sit. This really should be calibrated to the far edge of the orange plate that slides up below the blade, as you will always have to have your edge just past that point. And that is about 10mm further out. For a practical example, using a digital angle finder, with the arm set as close as I could on the 20 degree one on the vertical rod, i get an average reading of 20.12 degrees with the stone on the edge of the magnet platform. With a blade in place, overhanging the front orange plate by exactly 1mm, i get an average reading of 18.96 degrees All in all, it seems like it could be an okay unit, for the price, but not amazing yet. Making the changes above in Revision 3 though...that could make it pretty incredible for a cheaper unit, without adding much cost to the manufacturing, if any. And I'm aware most of these inaccuracies are minute in practical application, that there isn't enough difference between 19 degrees and 20 for it to matter to most people...but if you're going to make a guided system aimed at accuracy, symmetry, and repeatability...I'm going to be picky about the details In the long run though, i still find myself wondering why these pivoting arm style sharpeners are always so expensive. Without getting into the freehand vs guided sharpening systems debate, i still don't see where the sum of these parts adds up to a fraction of the cost. Gives me some good ideas for how to make one of my own though, so might not have been a total loss, despite the customer support frustrations
moishe
18
Sep 25, 2019
checkVerified Buyer
Recommends this product? Yes
MrBedlington80
6
Sep 20, 2019
checkVerified Buyer
Great piece of kit, puts a laser edge on my knives.
Recent Activity
Well, Drop support gave me the generic response of refunding the $50 for the stones they left out, or doing a return, and ignored the comments about falsely advertising that this came with the bearing pivot. When asked to escalate the ticket they just stopped responding... That was 5 days ago. I got ahold of someone at Drop today and they only want to do a full refund/return now...nevermind the fact that it will cost me $75 more to buy this elsewhere. Whatever happened to sellers taking responsibility and doing the work to make things right with their customers? What was advertised isn't what was sold, there's conflicting information between the product description and the specs (though not in a way that was obviously conflicting until after I saw the product in hand and researched why it didn't match what I read here) And they won't reach out to the supplier to hold them responsible and get me the missing parts....how the hell do you run a business where you're the middle man, but you don't resolve issues between the first and third parties? That's 90% of your job responsibilities when that's your business model! Did ANYONE here get the ball bearing pivot system that was listed in the product description? 40 people bought this, please speak up and share what you got? It's the only way to show Drop that they screwed up this listing, by listing this as revision 1 in the specs but describing revision 2, vs just one person getting a mislabeled order @Gritomatic Were you the direct supplier for these? I ask since you were commenting here, and these drop shipped from right near your location...seems too coincidental to be anything else Perhaps you'd be able to assist? If not it's going back, and I won't be re-purchasing at a higher price
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