misgrind

From mis- +‎ grind.

• (verb) IPA^(key): /mɪsˈɡɹaɪnd/
• (noun) IPA^(key): /ˈmɪsɡɹaɪnd/

misgrind (third-person singular simple present misgrinds, present participle misgrinding, simple past and past participle misground)

1. To grind improperly.
   • 1923, Frederic Burnham Jacobs, Abrasives: Grinding, Polishing, Buffing, Finishing - Volume 4, page 89:

     In many shops, a floor grinder is provided so that the men are perfectly free to misgrind their tools.

   • 1937, James Edward Hansen, Monroe J. Bahnsen, A Manual of Porcelain Enameling, page 294:

     Overheating of the enamel slip during grinding, or misgrinding from other causes, brings out difficulties with respect to set of the enamel, dipping, draining, and spraying, as well as surface texture.

   • 1988, Northern Logger and Timber Processer - Volume 37, Issues 1-6, page 9:

     As a saw doctor, I have spent many frustrating hours trying to level saws that were misground (thick and thin spots) .

   • 2003, Peter B. High, The Imperial Screen, page 420:

     Suddenly, we hear the rasping sound of a lens being misground and a shot of the chart shows production declining once again.

misgrind (plural misgrinds)

1. The act or result of misgrinding.
   • 1997, Fresh Cup: The Voice of the Specialty Coffee Industry, page 52:

     Misgrinds are costly. I admit I've popped beans into the grinder and activated it only to realize it was set on coarse when I needed a drip.

   • 2021, A. Luximon, Handbook of Footwear Design and Manufacture, page 231:

     Margins should be left everywhere after rough grinding so as to the “misgrind” can be avoided; thereby the fine grinding is needed.