Square block material hows that aligned on a lathe?

[bogstandard]

As mentioned above, here is a picture of the operation.

This can be used to centralise any pop mark in the four jaw.

Using two centres, one in the tailstock, and one between the tailstock centre and the pop mark. Then use your clock on the centre that is suspended in the middle.



You should find all good centres have a centre location in the small end, even ones with tangs on, and everyone should have two centres with their lathe, one for the tailstock, one for the spindle. Don't try to use a 'live' centre for the middle one.

Hope this explains it OK.

Bogs