AutoCAD Base Drawing

Have you ever worked with multiple drawings that have xrefed ones among them and found that they are not lining up? You are working with multiple floors, for example. When you xref one floor to the other and they are not lined up. It could be that they were not drawn at the same origin or it could be that their base points are not the same. In that case, you can use the BASE command to change the origin of your drawings. Go to your command line and type BASE. At the prompt, make sure the x, y, z, coordinates are all set to Zero (0,0,0) otherwise enter (0,0,0). Do that for all drawings involved. That will line them up.

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