Hi, my first post so hopefully its in the right place etc,
I am doing some moderatly high precision work on an M250, had had it ages and spent ages getting it level and setting things up, it works well however...
If i set the tailstock on something long i can get it good, can get it to turn within 0.01mm tailstock to headstock end at say 300mm long, but then if i turn somethign short say 50mm i have to adjust the tailstock by about 0.05mm else it tapers the item by apx 0.1mm,
The beds in pretty good condision and so is everythign else, i think its fairly straight as if i put something thick in it without the tailstock it will turn bang on for 80 or so mm with no taper,
if it wasnt for the above i was thinking it wasnt level and that the tailstock was compensating for something which varied, maybe this is the issue,
If anyone with more expenience can throw any light on it i would be delighted,
i really want to get things to turn within 0.02mm over a foot and not need to adjust the tailstock for diffeent lengths which i think should be possible,
Thanks,
Ralph
I am doing some moderatly high precision work on an M250, had had it ages and spent ages getting it level and setting things up, it works well however...
If i set the tailstock on something long i can get it good, can get it to turn within 0.01mm tailstock to headstock end at say 300mm long, but then if i turn somethign short say 50mm i have to adjust the tailstock by about 0.05mm else it tapers the item by apx 0.1mm,
The beds in pretty good condision and so is everythign else, i think its fairly straight as if i put something thick in it without the tailstock it will turn bang on for 80 or so mm with no taper,
if it wasnt for the above i was thinking it wasnt level and that the tailstock was compensating for something which varied, maybe this is the issue,
If anyone with more expenience can throw any light on it i would be delighted,
i really want to get things to turn within 0.02mm over a foot and not need to adjust the tailstock for diffeent lengths which i think should be possible,
Thanks,
Ralph