4 DOF Robotic Arm DIY Kit Acrylic Without Servo

This kit is the mechanical structure of a 4-degree-of-freedom robotic arm - the laser-cut acrylic links, joints and screw set that give an arm real range of motion - without the servos or controller board bundled in, which keeps the price down for anyone who already has servos on hand or wants to choose their own rather than use whatever a bundled kit happened to include.

Four degrees of freedom is enough for a genuine base-rotate, shoulder, elbow and gripper arrangement, meaningfully more capable than a simpler 2-DOF pan-and-tilt mechanism while still being buildable from laser-cut acrylic rather than machined metal. Precision-cut parts mean the assembly fits together cleanly rather than needing filing or adjustment to make joints move freely.

Suited to builders who want to understand robotic arm mechanics by assembling one themselves, and who either already own compatible servos or want to select their own rather than being locked into whatever a fully-bundled kit ships with.