Digital Thread and Digital Twin

On October 5th, 2016, at the Future of Flight museum in Mukilteo, three audiences from OMAC, Boeing, and ISO TC184/SC4 digital manufacturing team saw a demonstration of standards-based digital thread and digital twins:

  • A standards based digital thread was used to update a machining “twin” model in real time
  • The machining model was measured using on-line software, and off-line using a CMM.
  • New automations are possible when machining is measured in real time. They showed feeds being made 15% more efficient by monitoring chip thickness.

Continue reading …

Happy New Year!

With the arrival of 2017, we can take a moment to reflect on some interesting developments in the past year:

  • Many demonstrations of real-time digital twins during machining, driven by our simulator, show a practical way to extend the digital thread into existing machining environments.
  • AP238 (STEP-NC) is being actively used in production!
  • The third edition of STEP file format (Part 21) was published by ISO, opening new possibilities for links between engineering models just like links between web pages.
  • Semantic tolerances from AP242 underwent much testing in 2016 and are greatly improving manufacturing and inspection.
  • The digital thread is moving into additive manufacturing, with new setup models underway in AP242e2 and tests of additive process in AP238.

Continue reading …

New Year

More Articles ...

Solutions and Expertise

Connect product design, manufacturing, and inspection with a digital twin, built in real-time while machining with our new 3D model-based simulator. View from any mobile device, automate metrology, collaborate with supply chain, and real-time optimization.

Digital Thread

STEP-based solutions for CAD or engineering analysis, bill-of-materials, or supply chain integration: CAD shape, tolerances, assemblies, import or export, desktop or web visualization.

STEP CAD Solutions

IFC-based solutions for BIM systems: translation, bill-of-materials applications, and visualization.

IFC BIM Solutions


Our training classes are part of a larger solution and can cover areas such as digital thread manufacturing applications, CAD geometry, tolerances, assemblies.


Documentation, code samples and updates for our customers.


Since 1988, helping to build and test many STEP ISO standards. We also host development and testing forums, and an EXPRESS schema archive.