Self-locking Tri-fold Arm Bracket

A self-locking, fixed, lightweight folding extension arm, locked by gears + springs.

The advantage is that you don't need to manually tighten bolts every time, the disadvantage is that the load-bearing capacity is not very good, it is only suitable for lighter objects. The springs must be purchased (I originally had some left over from the old spool rewind): wire diameter 0.5, outer diameter 6, length 15. Screws may not be necessary, but because the precision tolerances for each material printed each time vary, it might not be tight enough or be particularly loose, so it's best to use screws for tightening, two types: M2.2*4, M2.6*8. Everyone is welcome to continue adjusting and optimizing.

Magnifying glass link: Cantilever Magnifying Lamp - A must-have for handicraft enthusiasts - Free 3D Models - MakerWorld

Springs: wire diameter 0.5, outer diameter 6, length 15

Screws: 1: M2.2*4

            2: M2.6*8

Notes for installation: The model is sharp, do not use too much force when assembling to avoid injuring your hands, you can also gently tap large screws with a hammer

Also, the supports are quite difficult to remove and I haven't figured out a good way to adjust them. I don't know how to set them to be easy to remove while still having smooth, flat support surfaces, so everyone can slowly pry them off with flush cutters