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The walking skeleton hand works with a wind-up mechanism. When fully wound, the hand crawls about 30 cm forward.

Update: The spring and rod from the 4set + spring kit have been updated. The gap has been slightly increased, and the spring now includes a small bump with a matching slot on the rod. This prevents the spring from rotating and makes the design more universal for both well-tuned and untuned printers.

Assembling: https://www.youtube.com/watch?v=DIuCoO7VbNs

Short show video: https://www.instagram.com/reel/DPyo2P5iICh/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==

I have sorted the files into sets, and the set number is marked on the body. In the tutorial, I also assembled the design step by step according to these sets.

PRINTING AND ASSEMBLING NOTES:

Your printer must be properly calibrated and produce accurate dimensions. Material choice is important — PLA Basic and PLA Marble work best. Other filaments are too soft, and the spring won’t unwind fully.

! Do not scale the model up or down — any size change will affect the mechanism’s performance!

NO SUPPORT! or glue are needed — all parts snap together easily.

Recommended: 0.2 mm layer height, 20% infill for better strengh.

Happy printing!

3D printing settings Please be sure printer flow is configured