Know what is allowed
Personal use, commercial print sales, remixing, redistribution, and marketplace listing rights are different permissions.
Commercial License Guide for Makers
Commercial STL licensing should be clear before you sell printed parts. This guide explains what makers should look for: permitted use, physical-print sales, redistribution limits, product page rules, and proof of licensing.
Track your proof
Keep license records, purchase history, and the exact product/file version used for commercial prints.
Respect file limits
Many commercial licenses allow physical print sales but do not allow sharing or reselling source STL files.