Here, I am going to tell you, how to make 3d model rust iron effect tutorial in 3ds max.
I have used map techniques in making of this tutorial.

[1]First take a plane in the top view port.

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[2]Then create a teapot in the top view port of this size.

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[3]Go to the modifier panel and select SHELL modifier of this parameters and apply.

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[4]After that open material editor or press M by selecting the plane and do these settings.

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[5]By selecting the teapot and open the material editor, select a rusty bitmap and apply it.

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[6]Then hit on RENDERING or press 8 and take the background color as grey in Environment option.

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[7]This is the final result.

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