Reply by Planeman40

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Posted on Question on metal lathe tool

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1179 posts in 2790 days

#1 posted 06-17-2012 04:14 AM

The truth is those carbide inserts are designed for production machining of steel and very hard to turn alloys where carefully calculated speeds and lots of lubricant is used. Surprisingly, the machining of steel doesn’t require a razor sharp edge like wood and soft metals, thus most inserts are made to the sharpness required which is usually not sharp enough for wood. I guess you could sit down and sharpen a carbide insert, but then that defeats the purpose of having a throw-away insert and you might as well just have a good steel turning tool.


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