Dear guys,

I’m sory because I don’t find a suitable place to post my question

I have 2 dimensions with positional tolerance and profile tolerance. But I don’t understand exactly the meaning of them and the role of them when manufacturing.

May anyone help me please

Thank you

Hello,

I would recommend that you obtain a copy of the ASME GD&T standard: https://www.asme.org/products/courses/introduction-geometric-dimensioning-tolerancing

Also available is an online introductory GD&T course "https://www.asme.org/products/courses/introduction-geometric-dimensioning-tolerancing" (and there's an advanced course too, but this one is required first).

You can also search (outside of the forum) for examples of "positional tolerance", "profile tolerance", "max material condition", "datum shift".

Cheers,

Kevin