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Sewing Together Finger Bones for Dinah Robot

A project log for My Advanced Realistic Humanoid Robots Project

Building bio inspired realistic looking humanoid robots to do chores and sports and stuff.

larryLarry 10/24/2024 at 12:310 Comments

I'm currently working to sew all the finger and wrist bones together for the Dinah robot and mount them to the arm. I wanted to show how I'm doing this process.

Here I tape the bone with adhesive transfer tape 3M 300 LSE. Note that I leave space on either end of the bone to allow some free fabric which is necessary to allow for elasticity as the bones need to rotate after all. Have to have enough free fabric to stretch as the joint rotates, allowing the rotation. But not so much free fabric that the joint is loose either. Has to be just right and snug.

Next I wrap the compression workout shirt fabric onto the tape and cut it to size. Here is just a rough wrap that hasn't been cut down to size yet.

Then here is a bone finished on the sewing and ready to attach to a neighboring bone. The sewing is done with nylon upholstery thread and a curved suturing needle and a surgical pliers using a suturing technique.

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