Secret sauce that brings YouTube followers, views, likes
Hinge for 180-degree rotation with lock
The red pin locks the blue arm.
Push the green slider to unlock the blue arm and turn it to the new position. Then release the green slider to lock the blue arm.
Two brown pins are used to limit the rotation angles.
STEP files of this video:
https://www.mediafire.com/file/jf72pf...
Inventor files of this video:
https://www.mediafire.com/file/gwmgv0...
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