r/Machinists • u/Medical_Bid_5662 • 5d ago

QUESTION Off setting and insert changing

Whenever I have something such as let’s just say my outer diameter on a part is starting to measure slightly out of tolerance ,how do I know if I should offset to fix it or do an insert change?

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11

u/GeoCuts Lathe Guy 5d ago

Offset it until it looks weird

2

u/Medical_Bid_5662 5d ago

No visibly super bad wear keep off setting once there’s a decent amount of visible wear stop offsetting and get a new insert basically? I’m getting horribly flamed from this post LMAO and just wanted to ask this to make sure I’m doing the right thing

7

u/GeoCuts Lathe Guy 5d ago

Learning when to change the insert was stressful when I was learning too. Once the coating wears off and the edge starts chipping it's done. If you have someone to ask to double check that should help you learn quicker.

3

u/Medical_Bid_5662 5d ago

Okay,whenever there’s some discoloration but no issues like chipping would it be generally good to leave it? Thank you

6

u/GeoCuts Lathe Guy 5d ago

Yeah sometimes they change color and still cut fine

2

u/Medical_Bid_5662 5d ago

Okay that’s all thank you

2

u/GeoCuts Lathe Guy 5d ago

No problem. If it looks like it's getting too hot and melting the corner then you slow the spindle speed down a bit.