Robotic claw arm

thingiverse

I was missing a cool robotic arm claw for a claw machine in the design process. The idea was to create a simple, fast-to-print parts system that's easy to assemble. There are two ways to connect the parts: 1. Using a 3M screw 2. Using a wooden pin (from a BBQ wooden pool) Assembly notes: 1. The base arms connect together around the top of the injection piston. 2. It's best to tie them using metal wire and glue them into place in 90 degrees from each other on the piston top. 3. Connect the extension arms to the base arms using an M3 screw. 4. Connect the poles to the extension arms 5. Place the ring around the injector cylinder (don't glue it yet) 6. Connect the other side of the poles to the four ring handles using M3 screws 7. Adjust the movement to correct open and close movement by moving the ring up and down. Make sure that the claw doesn't freeze in over-expansion (open) movement. 8. Once the ring is adjusted, glue it to the injector cylinder 9. Connect the pipeline to one injector and fill it with water 10. Connect it to the claw injector and make sure there's no air bubble in this closed system of two injectors and a pipeline. The design uses two plastic injectors with a connecting pipeline between them (see pictures and video for assembly).