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Modified Shoulder for Sigma Action Figure

Custom re-design for assembly
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updated July 31, 2025

Description

PDF

Custom shoulder parts used to complete the Sigma Action Figure.

Note I did NOT include all the files used in the original figure, you will need to download those directly. 

To install:

Add the shoulder joint to the shoulder.

Note that the shoulder has an opening for the shoulder joint and one side is a little deeper than the other, this is the armpit edge.

Insert the forearm into the joint backwards, then turn it 180 degrees to lock it in place.

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Model origin

The author remixed this model.

Differences of the remix compared to the original

The original 3D model seemed to be missing the connector joint for the shoulder to the bicep. I made these parts to perform that function, to complete the model. I also took the chance to re-design the shoulder joint to fill it out and remove the gap. I also added  just a tiny bit more swivel room to the armpit, if your figure will allow it.

License