I Destroyed $100 in Abrasives on This "Alien" Blade [4K]

The "Unsharpenable" Blade: A Warning to Professionals

I thought I could sharpen anything until the Spyderco MT40 arrived. This isn't steel—it’s injection-molded High Impact Ceramic (HIC), and after destroying over $100 in professional diamond belts and stones, I realized the truth: you don’t sharpen HIC, you "Pressure Flake" it.

The Abrasive Tournament I put this "Alien" material through a gauntlet of my best abrasives to see what would bite. From the SG-250 Aluminum Oxide to Silicon Carbide and the final boss—Diamond and CBN. The results were shocking. While Silicon Carbide showed promise, most professional tools were simply obliterated by the density of this ceramic.

A Message to Spyderco,
@SpydercoKnivesOfficial you released this to the market asking for feedback. Here it is: Are you gatekeeping an industrial protocol for HIC? We’ve proven that standard professional sharpening doesn't work. Is there a specific abrasive or pressure-flaking sequence required, or is this truly meant to be a "disposable" edge for the end user?
Huge thank you to @Tsprof for supplying the best case tool for this experiment. Their sharpening system truly is the definition of precision, we look forward to more time trying to master the TSPROF Pioneer.

Technical Discoveries

The Angle: We settled on 22 degrees (matching/slightly exceeding the existing edge) to mitigate the unknown.
The Technique: Edge-trailing diamond passes are likely mandatory. Any edge-leading movement results in catastrophic micro-chipping.

APRIL KSAG-5 GIVEAWAY We are giving away a brand-new KSAG-5 Angle Guide! To enter:
1. Comment below: Do you think High Impact Ceramic is the future, or a mistake?
2. Join the Sharpeners Discord: https://discord.gg/CMczSEb5
3. DM me: Message your YouTube username to me in the Discord so I can verify your entry!
Drawing held on the last day of April.

Shop & Services Visit www.getsharpusa.com for professional sharpening services and high-end sharpening supplies. We prioritize precision before profit—even when the material fights back.

⚠️IMPORTANT SAFETY DISCLAIMER
The content on Get Sharp™ is for entertainment and general informational purposes only. Knife sharpening, grinding, and polishing involve sharp edges, high-speed machinery, and powerful tools that can cause serious injury or death if used improperly. Sharpening techniques shown may not be suitable for every knife, steel type, or user skill level. Always wear appropriate personal protective equipment (cut-resistant gloves, eye protection, etc.), work in a safe environment, and follow all manufacturer instructions for tools and equipment. Get Sharp™, its owners, and affiliates are not responsible for any injury, death, property damage, or any loss arising from the use or misuse of information in this video. By watching or attempting any techniques shown, you assume all risk and agree to release Get Sharp from any liability.

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