(Un)limited Design Contest

Step 4: Assemble the legs

Mount the servo-plates on the leg-plates using m2 screws. You might need to enlarge the drilled holes a little bit. The m2 screws don't need to take much force, they're mainly used as placeholders. The central m3 screw that bolts the leg to the servo shaft will take the load.

Don't tighten the central m3 screws yet. First you need to discover the servo's center-position in software. After centering the servo's (in arduino code with a servo range of [0-180] it means writing the value '80' to the servo) you can mount the legs at a straight angle.