NIST Product and Manufacturing Information (PMI) Complex Test Case 5.
STEP AP242 Project, http://www.ap242.org
ASME standard Y14.46-2017: Product Definition for Additive Manufacturing
STEP to X3D conversion code: kshell/step_x3d/branches/basic_cad
X3D-Edit 4.0, https://www.web3d.org/x3d/tools/X3D-Edit
Correct definition and compliance of this conformance scene is maintained by the Web3D Design Printing and Scanning Working Group, https://www.web3d.org/working-groups/cad