Press to automatically pop up; press again to automatically retract and lock

The required hardware components are as follows:

1.0*10*70 stainless steel spring *2 (diameter can be reduced and replaced with 0.6/0.8; length can be shortened to 60/65)

M2*4*2

M3*50 screws*4

M3 nuts*4

It is recommended to keep at least one extra set of the above hardware items, as smaller bolts are easily lost.

The arrow area should be secured using M2 bolts; adjust the tightness so that when you manually move the upper linkage, there is just a slight resistance (this linkage needs to bear some force, print it using PETG or engineering-grade materials).

At the red-line locations, install springs and insert the signs. The red and yellow signs constitute two independent structures, each installed in this manner.

Align the two structures carefully. Note that recesses are machined on the outer side of the housing—one groove accommodates the spring, while the other allows the bolt head to pass through.

As shown in the diagram, secure everything using M3 bolts. Note that the hexagonal hole on the front side is designed for nut insertion, whereas the rear side features a round hole intended for the bolt itself.

The square hole at the front serves as the mounting point for the referee structure of the first panel.