Oscar Posted November 11, 2018 Share Posted November 11, 2018 my co-workers say always go with overlay and they tried explaining to me but I couldn't understand. Quote Link to comment Share on other sites More sharing options...
dlanorh Posted November 11, 2018 Share Posted November 11, 2018 (edited) Now sit down son and stop fidgetting. What was that? No the birds and the bees come when your a little older. An attached XREF is attached to the drawing file and if that drawing is xreffed into another drawing file, it will follow i.e. It is part of the drawing. Result increased drawing sizes and possible circular references (see scenario below) An overlay XREF is like a transparency and does not follow if the drawing is xreffed into another drawing. Scenario : DWG "1" is XREF'd into DWG "2" as an attachment. When you XREF DWG "2" into DWG "3" as an attachment it will bring the XREF of DWG "1" with it. This can create circular references if you were to then XREF DWG "3" as an attachment back into DWG "1" not knowing it contains a copy of itself. Therefore your co-workers are correct by always using overlay to prevent possible problems. Edited November 11, 2018 by dlanorh 1 Quote Link to comment Share on other sites More sharing options...
Oscar Posted November 12, 2018 Author Share Posted November 12, 2018 6 hours ago, dlanorh said: Now sit down son and stop fidgetting. What was that? No the birds and the bees come when your a little older. An attached XREF is attached to the drawing file and if that drawing is xreffed into another drawing file, it will follow i.e. It is part of the drawing. Result increased drawing sizes and possible circular references (see scenario below) An overlay XREF is like a transparency and does not follow if the drawing is xreffed into another drawing. Scenario : DWG "1" is XREF'd into DWG "2" as an attachment. When you XREF DWG "2" into DWG "3" as an attachment it will bring the XREF of DWG "1" with it. This can create circular references if you were to then XREF DWG "3" as an attachment back into DWG "1" not knowing it contains a copy of itself. Therefore your co-workers are correct by always using overlay to prevent possible problems. Thank you! This helped alot Quote Link to comment Share on other sites More sharing options...
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