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show crosshairs even if not dimensioning to them?

show crosshairs even if not dimensioning to them?

show crosshairs even if not dimensioning to them?

(OP)
For example, I have a top view where I dimension the location of a thru hole. That view has crosshairs

Two projection views later I have a bottom view. I can now see the other end of the thru hole, but I am not dimensioning to it (to prevent overconstraint).

Is it correct to show the crosshairs on the bottom view as well? I feel it would just clutter up my drawing.

Chris Loughnane - Product Design

http://www.pdnotebook.com
http://www.twitter.com/_chrisloughnane
 

RE: show crosshairs even if not dimensioning to them?

I do not have the latest Y14.2 standard - I have the 1992. The standard I have does not specify WHERE center lines must be shown. It only specifies HOW center lines must be drawn.

To take your example to an extreme - we have assemblies with hundreds of holes in them. We omit center lines in these instances unless we are dimensioning to the axes. If we did not omit the center lines, the drawing would look like a spider's web.

I would let clarity dictate the use of center lines.

RE: show crosshairs even if not dimensioning to them?

Centermarks aren't really in the ASME, I thought.   Don't quote me on this.

Either way, I don't add centermarks unless there is a dimension to the hole because this makes it clear that there is no dim to that hole (missing or otherwise).  They can also clutter the drawing if over used.

Matt Lorono, CSWP
Lorono's SolidWorks Resources & SolidWorks Legion
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RE: show crosshairs even if not dimensioning to them?

I agree with the rest. I only put center marks when dimensioning to them.

Powerhound, GDTP T-0419
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