Made this arm out of PLA plastic using sketchup, Made up of 7 Hitec 645MG Servos and 1 Hitec 85MG servo for the gripper, At full length it can only pick up about 200 grams but half way in it can pick up about 500 grams thanks to the dual servo at 2nd and 3rd DOF. The arm is still a work inprogress Added SKP Files for people who want to tinker. https://youtu.be/ThECL_-q7jg Printed parts: 2 x of the arm1 part1 2 x of the arm1 part2 5 x of the servo arm brackets 5 x of the gripper part1 2 x gripper ends rest one print of each Extra thing that you will need to make this: 1 x 100mm square lazy susan bearing 5 x 5x8x2.5mm Flanged Bearings AXIA1214 MF85-ZZ M3 Bolts 10, 12, 20, 25, 30, 40, 50mm 10 x M3 10mm counter sunk bolts for servo brackets M3 Locking Nuts 8mm M2 needle servo screws 20mm and (35mm for base plate) nylon hex M3 standoffs Plus 7 (hitec) Standard servos Metal Gear recommended 1 micro servo Metal Gear recommended still working on a better rotor base its abit hard to screw the middle servo in but it can be done.