The knife sharpening Shark Tank story comes down to one company we could confirm: Knife Aid, a mail in sharpening service that landed a hallway deal in season 11.
It is not a gadget you plug in. It is a subscription service, and the question is whether it still holds up.
Below is what happened on the show. You will also see what the business looks like today, and honest owner report patterns on quality.
If you would rather own a sharpener outright instead of mailing knives away, two solid picks are covered near the bottom. Search interest around knife sharpening Shark Tank tends to assume there are several brands involved, but there is really just the one.
What happened when Knife Aid pitched on Shark Tank
Knife Aid appeared on Shark Tank season 11, episode 4, which aired in October 2019. Founders Mikael Soderlindh and Marc Lickfett had both relocated from Sweden.
They pitched a service where customers mail in knives in a postage paid envelope for professional sharpening. The minimum order at taping was four knives for $49.
They asked for $400,000 for 15 percent equity. At the time of taping, the company had about $120,000 in total sales.
Of that, $37,000 came in the previous month alone. Barbara Corcoran and Kevin O’Leary both made competing offers inside the tank.
The memorable part came after the founders left the tank. Lori Greiner and Rohan Oza followed them into the hallway to keep negotiating.
The deal that closed there was richer than the ask: $500,000 for 20 percent equity. Later recaps confirm the deal actually closed rather than falling apart after taping, though the Sharks’ current stake has not been disclosed.
Is Knife Aid still in business
Yes. The company still runs its mail in service through its own site, and recap coverage points to an Amazon storefront as well. Current pricing works in bundles rather than a flat per knife rate.
The official site lists a seven knife package at $89.00, with add on repair work and ceramic blade sharpening priced separately.
Recurring subscription options exist too. Customers can schedule sharpening every 90 days, 180 days, or once a year.
The brand’s own listing claims the service has sharpened over half a million knives since launch. That is the company’s marketing figure, not an independently audited count.
What owners actually report about the quality
Owner reports on the service are mixed. The recurring complaint in one detailed community thread describes returned blades with visible scuffing.
Edges came back that were not actually sharp. At least one case reported that the original factory bevel geometry was not preserved.
The same thread reports bolster damage. It was not flagged to the customer before the knife shipped back.
When contacted, the company refunded the sharpening fee. It did not cover the cost of professional restoration, and cited staff turnover as a factor.
If you want a sharpener you own, not a subscription
A mail in service solves the problem for people who never want to sharpen anything themselves. For everyone else, owning a sharpener means no shipping and no waiting, and our picks if a service feels like too much waiting cover the wider field.
You also never have to guess what came back in the box. Two options worth knowing about are below, and if you want to know why belts, wheels, and slots leave different results, read what actually happens to steel during a sharpening pass first.
Work Sharp Ken Onion Edition MK.2
Best Overall
Electric belt sharpener | adjustable angle guide | flexible abrasive belts
This is a powered belt sharpener built for people who want a consistent edge without hand feel guesswork. The manufacturer lists an adjustable angle guide. The flexible abrasive belt handles kitchen knives, pocket knives, and outdoor blades in the same unit.
Owner reviews repeatedly mention a learning curve on belt pressure for the first few knives. Results get fast and repeatable after that. It is not the quiet option; some owners run it in a garage rather than on a kitchen counter.
Pros
- Handles a wide range of blade types and thicknesses
- Fast material removal for damaged or very dull edges
- Adjustable angle guide instead of a fixed slot
Cons
- Loud motor, not ideal for apartment use
- Belts wear out and need periodic replacement
HORL 2 (walnut)
Premium Manual Pick
Manual rotary whetstone sharpener | walnut base | no motor or batteries
The HORL 2 uses a rotating whetstone wheel instead of a belt or fixed slot, so you draw the blade across in a single pass rather than pumping it back and forth. The walnut base is genuinely built to sit on a counter, not hide in a drawer.
The recurring complaint is price relative to what it actually does: it is a single stone wheel, and buyers expecting the range of a full stone set or an electric unit will find it narrower in scope. Owners who like it tend to be knife hobbyists more than people looking for the fastest fix.
Pros
- Quiet, no motor noise or cords
- Consistent angle without a fixed guide slot
- Attractive enough to leave out on a counter
Cons
- Premium price for a single wheel grit
- Slower on very dull or damaged edges than an electric unit
| Model | Type | Best for | Price band | |
|---|---|---|---|---|
| Work Sharp Ken Onion Edition MK.2 | Electric belt | Mixed knife collections, faster repairs | $$$ | |
| HORL 2 (walnut) | Manual rotary whetstone | Counter top touch ups, quiet use | $$$ | Price |
Mistakes to skip with knife sharpening Shark Tank searches
Do not assume every knife sharpener with a Shark Tank connection is the same company. Knife Aid is the only one we could confirm actually pitched, and search results mixing in unrelated sharpener brands cause real confusion.
Do not judge a mail in service purely on the pitch episode. The company you see on Amazon or its own site today is years removed from that taping, for better and worse, so current owner reports matter more than the show segment itself.
If you are deciding between a subscription service and buying your own tool, our short quiz that matches a sharpener to your knife drawer is a faster way to narrow it down than reading spec sheets.
The bottom line: Knife Aid is a real company with a real Shark Tank deal, and it still operates, but owner reports on sharpening quality are inconsistent enough to treat carefully with knives you care about. For most people, owning a sharpener removes that risk entirely.
Knife sharpening Shark Tank FAQ
Did Knife Aid actually get a deal on Shark Tank?
Yes. Lori Greiner and Rohan Oza closed at $500,000 for 20 percent equity, negotiated partly in the hallway after the taped segment ended.
Is Knife Aid still in business today?
Yes, the company still operates its mail in sharpening service through its own website and an Amazon storefront.
How much does Knife Aid cost now?
Pricing runs in bundles by knife count on the official site, with a seven knife package listed at $89.00. Repair and ceramic blade add ons are priced separately.
Are there other knife sharpener companies from Shark Tank?
Knife Aid is the only knife sharpening business confirmed to have pitched on the show. Be cautious of unrelated sharpener listings that borrow the Shark Tank name without an actual appearance.
Is a mail in sharpening service better than sharpening at home?
It depends on how much you value convenience versus control. A service saves you the learning curve; owning a sharpener lets you inspect and control every pass yourself.
What should I buy instead of a mail in service?
An electric belt sharpener like the Work Sharp Ken Onion Edition MK.2 covers the widest range of knives, while a manual rotary stone like the HORL 2 suits people who prefer a quieter, hands on touch up tool.
If you are still deciding what type fits your kitchen, start with an overview of powered tools versus stones and rods. Our look at the origin story behind modern sharpeners covers how the category got here in the first place.
Prefer a hands on manual option beyond the HORL design? Our notes on rolling style sharpeners cover that category on its own, and you can browse more of our sharpener coverage for buying guides on specific styles.
Sources
- Knife Aid: Shark Tank appearance page, official brand page. https://knifeaid.com/pages/shark-tank