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Tuesday, June 29, 2010

Revit Tutorial - Adjusting the Weld Symbol

I have recieved a few emails about adjusting the size and/or scale of a weld symbol.  Well, thanks to the Revit clinic I no longer have to make a video tutorial for it...

Adjusting the Scale of a Weld Symbol



I have seen many users attempt to adjust the scale of the OOTB weld symbol and end up with unexpected results; most often the issue is that leaders display a gap instead of attaching to the geometry directly. I'd like to explain the methodology with an example of scaling this family down 1.5 times while making sure that the leaders work properly. Please keep in mind that this is not for Family Editor beginners. You need a good understanding of Family Editing before being able to follow these steps. I'm going to illustrate a simplified version with 3 symbols and no notes, as it should illustrate the process without making this intolerably long.
You will still have to bear with me though because this is going to be longer than a normal post, but I think is more valuable to have all of the information together than to break it into pieces. I'm going to put in small thumbnails of the images to try to keep the flow of the document manageable; you can click on the images to see them full-size.
Generally one of the best ways to figure out how to model a family is to look at an existing one. So I am going to do a lot of comparing with the existing Weld Symbol.rfa family to make sure we understand what is making it work. One of the most important things to consider before you attempt to create this new family is scale. Scaling down has to be done precisely or it will not work, so it is important that all of the adjustments you make are set to the same scale.
Let's begin by opening our existing family at Annotations > Structural > Weld Symbol.rfa, starting a new Generic Annotation.rfa family, and viewing them side by side in Revit.
In the Weld Symbol, go to Family Types and turn on the visibility of the Tail Note, Weld All Around, and Field symbols. Then go into Visibility/Graphics and turn on Dimensions and Reference Planes. Go ahead and hide the text labels to clear up space since we're not going to deal with them in this example....

Click here to see the video and the rest of the tutorial...