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Mazak QTN100-2 Tool Nose Radius Compensation Question

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Fusion Matrix control

Ever since I got my lathe I struggle making correct radii on smaller features (i.e. .015R on a .250 Dia).

Well I'm trying to turn a 4° taper to 0,0 and I'm getting an approx .020" Diameter tit at the center. I would like to minimize this.

So I checked my turret for alignment by running my tool to zero machining a piece of stock and I get the tit. If I run it passed zero the tit is minimized to next to nothing and would be satisfied with results.

I've also swept a drill holder and turret is aligned there.

I checked to confirm my TNR in my tool setting was correct and it is.

I made a .010 Diameter offset in X to see if it would disappear. I.e. my 1.125 OD now measures 1.115, but the tit is the same size diameter.

IS there some sort of tool nose compensation setting I can check to see if proper parameters are set?

Any other ideas?

As always - Thanks for the assistance!

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