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If you use a mandrel saver you won't bend the mandrel by putting too much pressure on the tailstock quil.
Check the alignment of headstock & tailstock with the kiss test. Put a dead or drive centre in the headstock & put you live centre in the tailstock & bring them together till they just kiss. Both points should line up with each other both laterally & heightwise. If they don't then adjust your headstock. Even a fixed head lathe can be out. Loosen the bolts holding the headstockdown & re-alignthe head till the two points of your drives are in line & tighten. If the points are out heightwise then you need to pack your headstock or tailstock till they do line up. If you have a swivel head lathe then loosen your locking lever, adjust & reclamp with the locking lever. Check your swivel head regularly as it can move slightly through use. You should only need to align your fixed head once & it should be ok but it's always worth checking periodically to see if it's moved. You probably know all this but a reminder doesn't hurt. Hope it helps.

<blockquote data-quote="Bill Mooney" data-source="post: 286851" data-attributes="member: 603">If you use a mandrel saver you won&#039;t bend the mandrel by putting too much pressure on the tailstock quil.&nbsp;Check the alignment of headstock &amp; tailstock with the kiss test. Put a dead or drive centre in the headstock &amp; put you live centre in the tailstock &amp; bring them together till they just kiss. Both points should line up with each other both laterally &amp; heightwise. If they don&#039;t then adjust your headstock. Even a fixed head lathe can be out. Loosen the bolts holding the headstockdown &amp; re-alignthe head till the two points of your drives are in line &amp; tighten. If the points are out heightwise then you need to pack your headstock or tailstock till they do line up. If you have a swivel head lathe then loosen your locking lever, adjust &amp; reclamp with the locking lever. Check your swivel head regularly as it can move slightly through use. You should only need to align your fixed head once &amp; it should be ok but it&#039;s always worth checking periodically to see if it&#039;s moved. You probably know all this but a reminder doesn&#039;t hurt. Hope it helps.</blockquote>

[QUOTE="Bill Mooney, post: 286851, member: 603"] If you use a mandrel saver you won't bend the mandrel by putting too much pressure on the tailstock quil. Check the alignment of headstock & tailstock with the kiss test. Put a dead or drive centre in the headstock & put you live centre in the tailstock & bring them together till they just kiss. Both points should line up with each other both laterally & heightwise. If they don't then adjust your headstock. Even a fixed head lathe can be out. Loosen the bolts holding the headstockdown & re-alignthe head till the two points of your drives are in line & tighten. If the points are out heightwise then you need to pack your headstock or tailstock till they do line up. If you have a swivel head lathe then loosen your locking lever, adjust & reclamp with the locking lever. Check your swivel head regularly as it can move slightly through use. You should only need to align your fixed head once & it should be ok but it's always worth checking periodically to see if it's moved. You probably know all this but a reminder doesn't hurt. Hope it helps. [/QUOTE]

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