Original model: test tool import and export with a STEP part shape used to demonstrate computer-aided manufacturing processes.
ISO 10303, Standard for the Exchange of Product model data (STEP-File) https://en.wikipedia.org/wiki/ISO_10303-21
Step Prolog Restful Interface (SPRI) Converter http://spri.kshell.com
X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit
Copyright (c) Web3D Consortium Inc. 2017