what colchester is it?No matter what I do the lathe turns a taper.
It says you can pivot the headstock but how does that work if it is sitting on a V bed?
How much of a taper
Machine a bar as described, put the toolholder on the end, slacken the headstock and move it to a distance of 1.5 thou, clamp up and remachine to test.
Different bed, square heads have a flat for the headstockHave a procedure and a picture - this is actually a Master 2500 but they are all the same in the principal that they work
View attachment 258813
Check the chuck3 thou over 6"
Bigger at the tailstock end tapering smaller towards the headstock.
Check the chuck
A bad chuck can cause the same effect
What's that?Different bed, square heads have a flat for the headstockView attachment 258817
Is it gap bed