: If you just want to practice 3D plant modeling logic, consider free or lower-cost alternatives that have similar workflows: : With the "Plant" workbench. AutoCAD Plant 3D : Often available via a free 30-day trial from Autodesk. Summary for 2018 Version
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If you are a student, check if your university has a partnership with Hexagon. Many institutions provide lab access to industry-standard BIM and 3D modeling tools. Learning SP3D Without the Cost : If you just want to practice 3D
The 2018 release (Version 12.1) is now an older build. Most industry leaders have moved toward the latest versions of Intergraph Smart 3D smartplant 3d 2018 best free download