Skip To Content

We just fixed downloads: every STL now comes straight from fast, reliable storage, saved under its own name, we're making 10,000 STL files and dozens of new tools, so things might break. We'll fix them ASAP.

StarForge KitsSTARFORGE

STL Building Blocks StarForge 3D Modeling Software

Printable Construction Toy Blocks

STL Building Blocks makes plates, bricks and bases for a construction toy designed for 3D printing rather than injection moulds, and saves each one in Stereolithography, the triangle mesh format every slicer from Cura to Bambu Studio opens. All parts share a 10 mm grid, a 4 mm module and a round 5 mm connector, so any block fits any other, and bases sit on flat undersides. A fit test strip, a studded base with five socket blocks at different clearances, dials in the fit before a full set. Every piece is a 3D Print STL File from StarForge 3D Modeling Software.

81+ StarForge 3D Modeling Software

81 results

Choose Your Membership

StarForge membership tiers and what each one includes each month
Included each month

Starter

Merchant

Merchant+

AI

AI Max

Credits451504501,5004,000
STL Downloadsup to45up to150up to450up to1,500up to4,000
3D ToolsUnlimitedUnlimitedUnlimitedUnlimitedUnlimited
AI 3D Modelsup to4up to15up to45up to150up to400
Sell 3D PrintsIncludedIncludedIncludedIncludedIncluded
Sign up