Tormek Community Forum

In the Shop => Knife Sharpening => Topic started by: MarthaH on December 23, 2025, 10:50:23 AM

Title: Newbie question: chef knive has a negative curve, what to do?
Post by: MarthaH on December 23, 2025, 10:50:23 AM
Hi everybody,

after decades of using a Lansky sharpening system with more or less success I recently bought a dirty, but not much used Tormek 1200. It sat for a long time in a box with a lot of accessories. It ran, but after 10min the motor lost power. Since the Tormek construction is more than simple, the problem was easily identified: dead motor condensator. After replacing it, the machine is running fine.

Over the time I gathered quite a collection of kitchen knives. One of them, a Zwilling chef knive (20cm) is quite worn. The heel (is this the correct terminus technicus?) is longer than the blade, giving the knive a negative curve at the end.

What would be the correct procedure to repair this?

PS. English is not my native language, please be tolerant ;-)