[PCB_FORUM] Re: PTC 3D export... question regarding what data is actually used...

Greg,
Do you have a place_bound_bottom shape defined for the symbol? If it is larger than the place_bound_top shape Allegro will put that as output.
Also check to see if a shape is defined in the dfa_bound_top subclass. This subclass has priority over place_bound shapes in generating the outline.
The only problem with this is that whatever shape on either subclass has the highest max package height value has that value passed into the .emp file. 

Larry
Gene Carman wrote:
I am exporting IDF using the PTC 2.0 settings. I have one component that was built “wrong” originally, so I modified it in the working .brd file, I changed place_bound_top to a smaller area (modified the shape) and yet the data I get when I export it shows the same old large part instead of the updated fixed smaller part. Yes, I have saved, and in fact exited and came back in. So is there some buffer holding the original part deep in the .brd file, and that is what is output to PTC, or what? I assumed that place_bound_top of each part is what is used to generate the 3D images… if so, then why can’t I change the shape for a single part and see the modification when I export the new 3D data? I can move the part and see a change, but the physical shape of the part remains the original placed size. 

--
Lawrence Briski
PCB Designer
SGI

lgb@xxxxxxx
tel: 715.726.7440
fax: 715.726.4345
sgi.com
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