Surface Texture / Lay Direction on Clyndrical Surfaces

[GenericDrafter]

Does it may any sense to request a circular lay on a cylindrical feature produced using a common lathe operation?

The lay looks perpendicular to the view plane when looking at a section. And conversely, the lay looks parallel when looking down along the axis of the feature.

Am I mistaken? Or is there be a reason to request a circular lay on a cylindrical surface (OD or ID) when the end application is a static o-ring seal? Is there even a way to create a circular lay on a cylinder with conventional machining techniques?

 

[dgallup]

I think it is incorrect to specify (and impossible to produce) circular lay on a turned cylindrical shaft. I always specify perpendicular lay in a view of the shaft profile because I want them to trace in the direction of the axis (across the lay). For static o-ring seals (we do millions of them a year) you do want the lay to run the same direction as the o-ring.

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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

 

[GenericDrafter]

Thank you for your response. It seems obvious, but I wanted a sanity check just in case.

Other opinions are still welcome, of course, as I'm happy to avoid confirmation bias whenever possible.