The Shop > Tools
parting off tool
polecat:
ok lads can you recomend a parting off tool for my c3 lathe 10mm shank and what speeds would you part off steel fast or slow i'm a beginner at this as you may sumise
polecat
PekkaNF:
10 mm shank is really small. I have about 150kg lathe with 550W induction motor, 20 mm shank for GTN2 inserts (Iscar) and justabout get near 50 mm in any material and 30+ mm on tempering steel. Top slide removed for rigidy.
* What material / what diameter?
* Are you willing to use any coolant?
* Are you willing to grind HSS?
Pekka
polecat:
i have a job i'm doing for my motorbike i need 2 shims of steel 19.6 mm od with id of 16mm i've done that bit ok but i need to part them off the tool i have now is not up to the job hence asking about speeds and a new tool
i am a time served engraver so know about sharpening cutters /drills i thought a tungston parting tool would be better at doing steel or better still an insert tool please advise
thanks polecat
John Rudd:
You newd a machine that is pretty rigid when it comes to parting off....
I also have a C3 ( Sieg) but even with a 2mm parting blade it struggles....yet my bigger lathe on a GTN3 insert is a breeze...(1.5kw motor with vfd... :) )
On a C3, I think I'd go for a GTN2 make sure everything is locked up tight and go for 200 rpm...add a bit of lube for good measure..
bp:
I have a Sieg C3. I use either a 1/32" wide blade or a 1/16" wide blade, both from AR Warner in the USA. The lathe can part off 25mm diameter 12L14 (free cutting) steel very well at something in the order of 200 to 300 rpm, with lots of squirted on oil, I use Inox. The difference is the spindle is run "backwards" (i.e. clockwise looking from the tailstock), and the cutter is mounted upside down. As the C3 is a modern machine with a bolt on chuck there is no danger of the chuck unscrewing.
Here are a couple of pictures.....
Best of luck!!
cheers
Bill
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