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.

Building Blocks StarForge 3D Modeling Software

Printable Toy Building Blocks for Kids

StarForge 3D Modeling Software makes custom building blocks: a construction toy of plates, bricks and bases designed for 3D printing rather than moulds. Every part shares one 10 mm grid, a 4 mm module and a round 5 mm connector, so any building block fits any other, and bases have flat undersides. A fit test strip of a studded base and five socket blocks at different clearances tunes the fit first. Each plate, brick or base downloads as a 3D Print STL File, ready for kids building blocks and toy building bricks.

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