OpenJSCAD<br> Parts infobox<br> Techniques infobox<br> Projects infobox<br> Materials infobox<br> Transformations infobox<br> Lifecycles infobox<br> Vitamins infobox<br>

Introduce to the groups:

• materials
• processes / transformations
• parts
• assemblies / techniques
• tools / projects

sources and consumers of each

• produced
• consumed
• waste