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On Wed, May 13, 2015 at 4:32 AM, Peter Clifton <pcjc2 AT cam DOT ac DOT uk> wrote:

> I'm adding first-class rotation info to PCB to support 3D models, so
> eventually we can export this info directly with no guessing.

New 'open' (?) 3D file format supported by the big players like
Microsoft and HP.

Aimed at 3D additive printing (The National Additive Manufacturing
Innovation Institute https://americamakes.us/ is near my Mother's
place.  Been there a couple of times.  Industrial sized 3D printers,
impressive to watch).

Intro:

http://www.designnews.com/author.asp?section_id=1392&doc_id=277515&itc=dn_analysis_element&cid=nl.dn14.20150512&dfpPParams=ind_183,industry_auto,industry_aero,industry_medical,kw_40,bid_27,aid_277515&dfpLayout=blog

Standard:

http://www.3mf.io/

Someday, soon I hope, we will be able to just 3D print our boards...

While this file format is aimed at 3D printers, it is still worth a
look to see if it could be used in the more conventional 3D model
representation due to its supporting companies.