Do you have a full list of supported formats? Does the viewer support mechanical cad STEP file format?

[OmerK100]

Thx in advance

[lkx007]

您好，您的来信已收到，我将会尽快给您回复，谢谢~~

[yanzexuan1]

Supported formats are "gltf", "glb", "dxf", "obj", "stl", "fbx", "dae". And since it is built on top of three.js, it is easy to support other fromats if three.js support it. There is probably no STEP file importer in three yet, so it is not supported currently.