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 In Shop Blog, Techniques

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When I first opened the package, I assumed that the tool inside was a prototype that had a plastic blade. That happens occasionally here at the magazine when a manufacturer wants our opinion on a tool’s ergonomics before they crank up production.

But no, the white chunk of stuff at the end of the Gladstone Tools marking knife actually was the working blade. And this was no prototype.

The spear point of this 8″-long knife is ceramic. Ceramax 80, to be precise, a material you can find in a variety of industrial and home applications, including some kitchen knives.

According to the manufacturer, the knife is second in hardness only to diamond and “will never need sharpening.”

That is quite a claim, and so I immediately put the knife to work today to see how it performed. The ceramic blade is a spear-point shape that is about 1/8″ thick. It has the same general shape as the now-discontinued Veritas marking knife we reviewed a few years ago.


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