Step 3: Install the shoulder locknuts

Take part 100_01C and place it such that the neck is facing toward the surface while the waist is pointing toward the ceiling. The hollow part should be facing you.

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Step 3: Install the shoulder locknuts

In the hollow parts, around the left and right arm position, you should see 12 insert holes on each side. Takes 24 - M4 nylon insert locknuts and slot them in those 24 holes. Make sure that the white part of the locknuts is facing you. Once you are done, secure them with masking tape so you can move the part around without the locknuts falling out.

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Step 3: Install the shoulder locknuts