8 Replies Latest reply on Oct 11, 2011 10:49 AM by Scott McFadden

# Dimensioning a 180 Degree Angle

Can you dimension for an angle of 180 degrees? I can't get SolidWorks to do that. I want to dimension a cross-section that has 2 holes 180 degrees apart.

When I try, I get the following message:

Could not create reference dimensin from current set of selected items.

• ###### Re: Dimensioning a 180 Degree Angle

Jay,

Yes, I just did it.  Start off with the holes being say 160° and change it to 180°.

• ###### Re: Dimensioning a 180 Degree Angle

Not perfect, but start with the holes not at 180 degrees. Add the dimension and then make them 180 degrees apart.

• ###### Re: Dimensioning a 180 Degree Angle

That works, but I can't seem to get the text to be at the bottom. I wants to snap to the top where it would cross over my other 90 degrees dimension.

• ###### Re: Dimensioning a 180 Degree Angle

Are you able to get the 160° to place where you need it to be?  While you are creating the dim?

• ###### Re: Dimensioning a 180 Degree Angle

Yes, but it is not centered. I flip-flopped the 90 degree dimension and the 180 degree dimension so they don't cross each other.

• ###### Re: Dimensioning a 180 Degree Angle

Well, you just might have to live with what you get.  At least you have a solution

on how to create the 180° dimension.

But, Peter makes a great point.  Also comes to mind that this can be taken care

of with a bolt hole note that can be parametric if the hole is patterned then using the

annotations hole callout.

• ###### Re: Dimensioning a 180 Degree Angle

Jay,

just my 2 cents but the dimension is unecessary. According to drafting standards the centerline thru both holes "implies" that they lie in the same plane, ie 180° apart. If it's a tolerance issue it should be handled with geometric tolerances.

Regards,

-Pete

• ###### Re: Dimensioning a 180 Degree Angle

Peter, I know that. Quite often we get drawings from customers and put them on our own drawing borders. This is one of those cases where I needed to "Copy" a drawing to our border.  The other thing is that they are only reference dimensions...so why have them when the center lines accomplish the same thing?