⚙️ FREE Test Model – 3D Printable Planetary Grabber (Trial Version) 🦾

This is a free test version of the 3D printable planetary grabber, created to let you test your printer settings, tolerances, and assembly fit before downloading or printing the full model. It uses the same planetary gear concept as the complete version, so you can experience how the mechanism works in advance—at no cost.

The test model demonstrates the core idea: rotating the center (sun) gear causes the grabber mechanism to tighten or loosen. It is designed to be printed without supports, assembles easily, and requires no glue, making it perfect for quick testing and experimentation.

⭐ What This Test Model Is For

Check print quality and tolerances

Test gear movement and smooth rotation

Evaluate material choice (PLA, PLA+, PETG, etc.)

Practice assembly before printing the full model

🔧 Features

FREE downloadable test STL

Based on the same planetary gear system as the full version

Support-free printing

Press-fit assembly, no glue or hardware

Quick print and beginner-friendly