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TNMG inserts

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Vic02/07/2021 22:44:56
2962 forum posts
8 photos

Anyone use them? I’ve finally got round to trimming down the tool holder for my lathe and was thinking of getting some of the polished inserts for it.

ChrisB03/07/2021 09:08:12
649 forum posts
207 photos

I use them, don't have the polished ones yet but I want to get some of them. I got my inserts from Cutwell, YG branded, in different tip radii. I find they work well in both deep and shallow cuts, but for shallow cuts or creeping to size I use a new edge. The polished ones may perform better. I also use one on my flycutter and it works very well.

Vic03/07/2021 11:42:34
2962 forum posts
8 photos

Thanks Chris. The particular attraction for me is that although they are a similar cost to other inserts you get six cutting tips. I’ll order some polished ones to try.

old mart03/07/2021 12:48:30
3418 forum posts
210 photos

We have three righthand and two lefthand holders for TNMG 16 inserts. One of each hand has an aluminium insert in it which is also good for fine finishing cuts on steel. I find that the cheap Chinese Drillpro brand for steel works very well. As Vic says, you get six edges as long as you don't knock the whole end off an insert. We have Sandvik, Seco, Kennametal, Iscar, Tungalloy and others bought cheaply on ebay. WNMG in 6 and 8 sizes are also good with six edges like TNMG. Try the cheap H01 grade if you are thinking of getting some for aluminium.

Edited By old mart on 03/07/2021 12:50:10

Vic05/07/2021 22:44:09
2962 forum posts
8 photos

I’ve ordered a couple from JB to try.

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