Parting off

[brightspark]

wouldnt use a dixon toolpost .a lot of overhang on them

 

[E T]

I use a 3mm Iscar tang-grip on the South Bend 9A with good results.
Tool on centre, tighten up the topslide gib en rear of carriage.

 

[E T]

If you are forced to part something off with a long stickout, move the blade to the tailstock side of the Dixon toolpost. Then the force is going more directly downwards, closer to the compound slide pivot. At the moment, with a Dixon toolpost and a parting holder in that toolpost, the force is quite a way forward of the dovetails under both compound and cross-slides.

I like that. Never thought about doing it that way.

 

[ukracer]

leaning towards this myself tbh...hss and my thinner tipped seem to be fine.

It does not like 4mm on my master 2500.
It hates being low even a tad it seems to get the material being cut to try rolling overthe cutter.

 

[Smouser]

When I had my Warco lathe (first lathe) I thought parting was some black magic. Never could get it to part off reliable or without breaking inserts etc.

Now on my Elliott Omnispeed it is as easy as pie with a 3mm insert. I still don't know what the problem was with the Warco

I have not tried a 4mm insert but I am sure the Elliott will cope with that too.

I know @RobCox had a bit of trouble parting with his M300 before he changed his spindle bearing. Maybe my old Warco required a new spindle bearing too.