3d printable prosthetic hand

Generate a 3D-printable, modular prosthetic hand and forearm assembly. The design must include: Finger Mechanics: 5 jointed fingers (proximal, middle, and distal phalanges) with internal 2mm diameter hollow channels running through the center for tendon-driven movement (fishing line). The Palm: A robust palm with a single-axis wrist hinge. The palm must have internal routing to guide the 5 finger strings into a single bundle at the wrist. The Forearm: A hollow forearm gauntlet with an integrated housing compartment for an Arduino Nano and a mini-breadboard. Tensioner Feature: Inside the forearm gauntlet, include an anchor point for a 3D-printed C-spring mechanical tensioner. Technical Details: Include a 10mm flat circular indentation on the index fingertip for an FSR sensor and a 10mm rectangular cutout on the side of the forearm for a toggle switch and RGB LED. Style: Clean, industrial medical-grade aesthetic, optimized for FDM 3D printing (no steep overhangs). Surface Pattern: Integrate