🚀 Kickstarter · 2025

Hapstone S4 Knife Sharpener

Compact and easy-to-use knife sharpener. Precise, upgradeable, and made for all types of knives.

Founder: Anton Kulizhko Category: Design

$34.9K pledged of $10.0K goal (349% funded)

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Affiliate links · Last verified 2026-05-21 · 🌍 Outside the US? Amazon and eBay will redirect you to your country's local store automatically.

The Pitch on Kickstarter

Hapstone S4 Knife Sharpener appeared on Kickstarter in 2025. Anton Kulizhko pitched the product to the audience. $34.9K pledged of $10.0K goal (349% funded).

Frequently Asked Questions

Is Hapstone S4 Knife Sharpener still in business?

Hapstone S4 Knife Sharpener is still listed on Amazon and eBay — see the buy links below for the latest availability.

Who founded Hapstone S4 Knife Sharpener?

Hapstone S4 Knife Sharpener was founded by Anton Kulizhko.

Did Hapstone S4 Knife Sharpener get a deal on Kickstarter?

Yes — $34.9K pledged of $10.0K goal (349% funded).

Where can I buy Hapstone S4 Knife Sharpener?

Hapstone S4 Knife Sharpener is available on Amazon and eBay. We compare current prices across both at our /results page — link below.

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