Uploaded February 2025 | Updated September 2026, 1 week ago

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G'day everyone,

One day build project this week. Run out is something that I occasionally have to deal with. I try to make most of my parts as low tolerance as possible and that includes having enough room to work with the standard run out of my 3 jaw chuck.

However if I am chucking long parts, or parts with soft jaws, axial run out can present itself as a problem. Depending on the part it is usually a 1-2 minute fix, although it can take much longer if I have to work with parts in the 4 jaw chuck.

I remember watching Chris from Clickspring's bump roller tool years back and wanting to make one. (clickspringprojects.com/bump-lathe-centering-tool.html) So I made one.

I just went a bit overboard with the design of mine. I love the design but it is a tad unnecessary.

Still I hope you enjoy the video. Cheers

#machining

Lathe Bump Centering Tool Build
Lathe Centering Tool Project
Making a Centering Tool