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Which is the best parting tool ?

Advantage and disadvantages of different types of parting tool.

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Bob Brown 127/06/2014 10:09:57
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1022 forum posts
127 photos

There seems to be a large difference in techniques all of which work, about the only thing that is common is sharp tool and square.

The technique that suits one machine may not suit another even ones of a similar make due to variances in rigidity amongst others, even the material will effect the operation. I think at the end of the day it is a case of horses for courses, a bit of trial and error and practice usually results in a technique that suits the individual machine/person.

As the parting operation is normally one of the last operations I prefer just to turn the tool post or fit the tool (3 way Dickson tool post) and part the job off. Messing about is not for me if I'm making 2 + parts just like to get in to a rhythm and not had any problems to date.

Brian John28/06/2014 04:27:40
1487 forum posts
582 photos

I like this one a lot but the seller does not have spare blades :

**LINK**

Who makes spare blades to fit this parting tool : 1.5 X 10 X 80mm ? The three nuts should hold the blade very firmly.

Bazyle28/06/2014 09:34:13
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6956 forum posts
229 photos

A feature if the link above is that the holder thickness is overcome for small lathes by having the mounting bar on the side. It was mentioned that the initial post link 3 would be too thick for mounting in a small lathe. However I have one of these on my Hobbymat with a bar screwed to the side.

Neil Wyatt28/06/2014 12:50:36
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19226 forum posts
749 photos
86 articles

> so that the swarf becomes narrower than the groove

GHT (and others) recommended a v-groove ground along the top of an HSS parting tool for this purpose. Not easy to do well.

Another tip (as per LBSC) is an HSS tool with the tip shaped like the tail of a fish, possibly with the corners slightly rounded as well. This is not for parting off, but for turning crankpins etc. to a good finish. The tool can be worked from side to side as well as fed in and is less liable to chatter. I have tried this and it works well.

Neil

Michael Gilligan28/06/2014 13:06:55
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23121 forum posts
1360 photos
Posted by Michael Gilligan on 26/06/2014 21:42:25:

It's an unsuitable tool for your lathe but; study the features and you will look at some of the others with clearer vision.

.

Neil,

Nice to see we're getting there

MichaelG.

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