Digital Product and Process Development Systems

Volume 411 of the series IFIP Advances in Information and Communication Technology pp 254-272

Enabling the Crowd Sourcing of Very Large Product Models

  • Martin HardwickAffiliated withRensselaer Polytechnic Institute
  • , David LoffredoAffiliated withSTEP Tools, Inc.
  • , Joe FritzAffiliated withSTEP Tools, Inc.
  • , Mikael HedlindAffiliated withKTH Royal Institute of Technology.Production Engineering R&D., Scania CV AB


Part 21 is a public domain file format for the geometry of assemblies and is widely used by industry to describe design and manufacturing specifications for airplanes, automobiles, ships, buildings and other products. We describe a proposed new edition of Part 21 that includes URI’s and JavaScript to enable the crowd sourcing of very large product models.


Data exchange Product Models CAD CAM STEP STEP-NC