21 Jul 12 0:58
Thank you John, creating a sketch from scratch in NX would be the ultimate solution. However, in many cases, you would have a more complex icon/mark/symbol/logo which you have created/modified in Adobe Illustrator, which then can be exported as DWG and imported into NX. But there is a problem with this workflow.
Here is a "workaround" to the problem.
It seems the NX DWG/DXF importer is unable to properly analyze a DWG file made in Illustrator (I don't know about DWG files made in Autocad yet), so that the DWG line entities are all converted into a single spline, which causes problems with extrude or emboss features. Now, in Solidworks this is not an issue because presumably Solidworks can analyze DWG files made with Illustrator because it converts the DWG straight line entities into "lines" and curved lines into "splines". Importing this Solidworks DWG into NX creates a group entity consisting of a correct mixture of lines and splines. Now extrude or emboss features can be created without problem.
So the workflow is now:
1. create customized icon/logo in illustrator. save as DWG.
2. import this DWG into a drawing in solidworks (select "convert to solidworks entities")
3. save this drawing as DWG again.
4. open this DWG in NX.
This solution involves using Solidworks as a go-between to correctly convert the DWG into a mixture of lines and splines. There are probably other programs that can do the same job.
Another solution for those who don't have solidworks, but it might fail in some cases:
1. create customized icon/logo in illustrator, then use the tool "cut path at selected anchor points" to cut all the anchor points in the drawing. save as DWG.
2. open this DWG in NX.
3. in case it fails, a solution might be to convert the imported entities with the "simplify curve" tool, however the problem is that it will split the original entities into a huge number of smaller lines and arcs.
NX8 i7-3770K@4.3Ghz 16GB Quadro2000