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Lathe dogs.

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Andrew_D:

--- Quote from: kvom on May 14, 2010, 08:56:57 AM ---One advantage of using a lathe dog between centers is that you can remove the work from the lathe and later put it back without losing concentricity.

--- End quote ---

I tend to think that is the main advantage...
The only time I have turned between centers is when I know I'll be removing it for a test fit or maybe a second-op on the mill, and then need to put it back in the lathe. (Usually, I use a 3 or 4-jaw chuck and support the other end with the live center.)

Of course, using a dead center in the spindle instead of a center turned in a 3-jaw would (in most cases) result in being able to turn slightly longer shafts. Might be an issue on some lathes.

Andrew

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