I am trying to create a window family with trim on the interior and exterior sides of the wall. I notice when I start with the Window.rft file, the extrusion start and end points are related to the centerline of wall, whereas when I create an extrusion using the Window with Trim.rft file the extrusions are related (attached?) to the exterior face of the wall. Can someone please explain the difference so I can understand the basics on how extrusions behave, or are supposed to behave in families? The YouTube videos I have viewed don’t seem to mention this. The image below is from what created with the Window with Trim.rft file: the green is what comes with the file. The red is what I created.
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Before you model any geometry, you have to set the working plane. Go to "Set" in the ribbon, and then either pick a work plane by name or pick one by clicking on the face where you want to model from. Keep in mind that you can create a reference plane, then select it and, in the properties palette, give it a name. That will make it available from the drop down list when you're trying to set a working plane.
Also, keep in mind that the direction you draw the plane (left to right, top to bottom, etc.) will affect which direction is "positive" or "negative" for extrusions. I don't remember off the top of my head which is which, so you should probably play around with it until you're familiar.
Hope that helps.
Thank you! The positive direction for extrusions has been stumping me for a long time.
BTW for others...
It appears to follow the right hand rule. Put your right hand parallel to the plane being drawn (perpendicular to the screen). Point your fingers in the direction you drew the line. Your palm, and the direction you curl your fingers will be positive z when an extrusion is drawn on that plane.
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