I see that this is an old topic - but I too have been wondering what the long term implications might be for 3d printing.
While not an E-11, there are plans out there for other SW blasters that come out fairly well:
http://www.thingiverse.com/thing:226014
http://www.thingiverse.com/thing:150686
Based on those, I've presumed that an E-11 could be broken down into component parts, printed and built.
Prices are constantly dropping as 3d printers become more "mainstream"
ABS filiment prices are only ~$25/KG
and printers with a 10" platten can be found in the $700 range
I've even wondered long term if it will have implications on armor making.....
I can see a time where models of armor parts are able to be shared online.
Once that happens - I wonder what the impact will be to "family trees" for the lineage of parts....