The best you can do is save the file as a Dumb solid... either SAT or
STP but you can't save it and be able to edit the features.
This is pretty standard for Solid Modelers out there.
--
Kent Keller
http://www.MyMcad.com/KWiK/Mcad.htm
Assistant Moderator
Autodesk Discussion Forum Moderator Program
"HondaRD" wrote in message
news:f189984.-1@WebX.maYIadrTaRb...
> I use Inventor 7 at school and Inventor 5.3 at home
> and when I try to open a part file I made at school
> I get an error message "SG_E_FILENOTFOUND".
> Can I not open part files from version 7 in an older
> version of inventor (5.3)? Thanks for any info regarding this!