Location of finish symbol for a cylindrical feature

[lahines25]

Greetings,

I know the drafting standard says to attach a finish symbol to the extension line of the dimension, but the consensus of the younger folk is that the symbol attached to the dimension line is more clear and easier to read. We don't adhere fully to any particular drafting standard, and I think the option of having the symbol on the dimension line conveys part intent (meaning a vendor should be able to understand what is needed to make this part). I was wondering who would give this drafter a hard time, or who would say "who cares as long as part intent is conveyed"? Or maybe another option?

Images are of a section of a cylindrical shaft with the finish symbol in 2 different locations.

Thanks for your input.

 

[looslib]

From ASME Y14-36m-1996:
3.1.3 Symbol Location.
The point of the symbol shall be on a line representing the surface, an extension line of the surface, or a leader line directed to the surface, or to an extension line. The symbol may be specified following a diameter dimension. The long leg (and extension) shall be to the right as the drawing is read.


"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

 

[lahines25]

Thank you, and I am familiar with the standard.
But, like I posted, we don't follow any standard to its fullest, so I am wondering if the symbol on the diameter line would convey the wrong intent?

 

[looslib]

I prefer the top view, but did understand that it was the 3" diameter that the drawing wants held to a 8 finish.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

 

[TheTick]

I think the option of having the symbol on the dimension line conveys part intent

It conveys confusion. Write for the audience.

 

[ewh]

I prefer it tied to the extension line, seems less ambiguous.
Unless you are going to document this interpretation, I would stick with accepted practices.

"Know the rules well, so you can break them effectively."
-Dalai Lama XIV

 

[powerhound]

we don't follow any standard to its fullest,

Why not? If you did, this would be a non-issue.

Also ASME Y14.36-2018 says: "The symbol may be specified with a diameter dimension." It's in section 4.5 but if you aren't following any standard to its fullest, I don't know how much weight that carries.

John Acosta, GDTP Senior Level
Manufacturing Engineering Tech