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Boxford CUD poor cutting

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diagnosticated:
Hi Guys.  Having watched that man on youtube, I bought an ex education boxford cud lathe from the usual source as a hobby lathe. My problem is this: Facing cuts are lovely and smooth but longitudinal cuts are terrible. The finish looks like a screw thread.  The cross slide seemed to have far too much play so I replaced the thrust bearings. Play reduced slightly but finish was still rubbish.  I made a spacer/washer to take up 90% of the play in the cross slide but longitudinal cuts are still poor.  Any ideas??  I cannot feel any play at all in the headstock.  I have the boxford cutting guide book with set up instructions but as I cannot make a smooth turn on a bar it is hard to follow the set up instructions. Is it possible for the headstock to be out of alignment with the bed?  Grateful for any help as lathe is no good like this despite looking in good condition. 

Joules:
 :worthless:

You need to show us your problems.  Oh and welcome to Madmodders

DavidA:
Try a cut with the gib strips tightened up until you can hardly move the cross slide and top slide.

Also maybe use a clock guage to check around for wear.

Dave.

mattinker:
If you can face off cleanly, I don't think there can be much wrong. To encourage you, it sound more like operator than machine oriented. Some photos or even a video would be a good idea!

Welcome aboard, regards, Matthew

Will_D:
Hi and Welcome.

I agrree with Matt, if you can face off then the crossslide is fine. It sounds like play in the saddle or top slide.

If you can get hold of a clock gauge or even just the end of a tool and feeler gauges try this.

Piece of 1" bar about 12 " long chucked in 3 jaw. Lock the headstock so chuck can't rotate.

Set the tool or clock gauge to overhang the cross slide ( say a 2" cut with the top slide )

Set the tool or gauge to touch in the middle of the 12" test bar.

Now grab the top slide and wiggle and waggle to show up all the plays in the 3 gibs!

Adjust as required

HTH Will

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