tracked robot 3d model

Create a functional 3D-printable tracked robot with an articulated arm and extended jackhammer tool. Optimize for FDM (PLA/PETG), max 220x220mm parts, ≤45° overhangs, 0.2–0.4mm tolerances, metric screws (M3–M5). Base: dual tank tracks, drive sprocket (6mm shaft), idler with tensioner, rollers, space for motors, battery, electronics. Platform: Arduino mounts, cable channels. Arm: 4 DOF, reinforced, MG996R mounts, 608 bearings. Tool: jackhammer with modular extension (up to 5m scaled), interlocking tubes, internal rod/cable, 120° angle, reinforced wrist. Control: manual levers (backhoe style). Objective: eliminate accident risk, physical overload, and heat exposure; enable efficient channel cleaning without damaging refractory structure, ensuring full removal at multiple angles. Metrics: increase productivity (reduce cleaning time), reduce exposure time, ensure replicability across vertical regenerative parallel-flow furnaces.