2D- Exporting .dwg Files and Linetypes


#1

When exporting 2D drawings as .dwg, the linetypes scale automatically converts from 1 to 25.4. How can I change to where it always exports with a scale value of 1? Thanks.


#2

This sounds like you are doing something in your process that is changing from inches to millimeters. (1" = 25.4 mm)


#3

Of course… but where do I change that? My scale factor on everything is 1. It’s perfect in .3dm format, but only changes when exporting to .dxf. Is there somewhere in the system that I can change the default? Thanks.


#4

chrisretrac,
This one is confounding me so far. Can you share a 3dm and maybe we’ll find a problem with it? My linetypes come over with expected scale in both dxf and dwg.
Are you using a custom linetype? What happens when you use a standard preloaded linetype?


#5

Same thing happens with loaded linetypes. The linetype scale automatically defaults to 25.4. Even when I change the scale to 1, export as .dwg or .dxf, reopen the file, the linetype scale reverts back to 25.4.


#6

attached is a test .3dm file per request. The 2D drawing was generated from a model. I set linetypes, colors, plot line width, etc., then export as .dwg or .dxf. That’s when linetype scale jumps to 25.4. Your help is much appreciated. Thanks.

test.3dm (1.2 MB)


#7

chrisretrac,
your file works fine for me. My linetype scale is not changing after export, and the dwg I’ve exported looks correct when I open in Acad. The problem has to be with your install of Rhino. This is one for @pascal I think. Sorry couldn’t find a quickneasy for you.


#8

What version of Rhino are using. I know this was a problem in an earlier release of Rhino 5, but I think it’s fixed now. @lowell
This issue had to due with the way Autocad and Rhino store linetypes.


(Lowell Walmsley) #9

Thanks for mentioning that, Dennis.
That change was made on March 7. Not sure what SR that would have been.


#10

Doesn’t McNeel maintain a quick-access database with historical meta-info like this?


#11

Thanks guys for your help. I’m using Rhino4 SR9. Haven’t yet upgraded to version 5. Thanks again.