The Shop > Tools
Issues parting off
Bangkok Mick:
Thanks George,
I think last week my tool was getting blunt so I will try again with all the advice this thread has offered. I think I will also invest in one of those insert type cutters as they seem to be the recommended way forward.
Cheers Mick
Stilldrillin:
Mick.
I'm sure the answer is in the above postings. But which one, I don't know! :scratch:
From my own, mini lathe experience. The tipped tool from RDG was just as bad, as all the other tools I have owned.
Here's the project....... http://madmodder.net/index.php/topic,2759.msg29242.html#msg29242
Parting didn't really settle down, until I had taper roller bearings. A carriage lock. Dixon type toolpost, and dedicated parting tool.
Somewhere here, I think...... http://madmodder.net/index.php/topic,7759.msg83052.html#msg83052
The tipped tool? Somewhere under the bench. Unloved. Unused....... :(
David D
Bangkok Mick:
Thanks David, good to know before I go spending funds.
Cheers Mick
dawesy:
Following the advise in a video on YouTube I've successfully parted off 25mm 316L stainless with a cheap RDG hss tool. No chatter or wobbling. One of those ' confirm everything three times before you start'tgings I think.
Fergus OMore:
Years ago, I made up a rear parting tool to the design of George Thomas and despite changes from one lathe to another, it has never faltered.
I simply followed the 'words and music' and ground up and ordinary Eclipse HSS parting off blade. Well, almost :coffee:
The top- which is really the bottom has a specified Vee kerf of 140 degrees and I was windy about doing the trick without a T&C( then) and I settled for a rounded kerf done with cheap Chinese pillar drill going 'flat out' with a worn thin and rounded angle grinder disk. After all, it is only a kerf of of an inch- which will part off 2" round. Thomas, the great pedant Guru specified a front edge of a male vee of 140 degrees which is a far easier task. And then when it all blunted, I simply ground the front edge flat.
With it running- in the the Myford forwards- 'cos the chucks unscrew- it peels off up to 2" in a continuous narrowed ribbon- downwards.
As I said, dead easy and really, what is all the fuss. Whether a tool is a penknife or something more exotic, it is only cutting- or not.
I didn't invent it- nor did Thomas, some Gezira Gizinta did it in Ancient Eygpt at the time of the Pharoahs -when he stuffed his dead Mummy :lol:
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