In this section, you will be attaching the upper arm assembly you built much earlier to the turret. This will serve as a link to your end effectors and allow your arm to have even more range of motion.

• Upper Arm Assembly (PN15 + PN16+ PN17)
• Turret Assembly
• One M3x14 screw
• Two M3x10 screws
• Three nyloc nuts

Follow the steps below to attach the upper arm assembly to the turret:

1. Attach the Upper Arm Assembly at joint H13 on PN16 and M13 on PN13 using an M3x10 screw and a nyloc nut.
2. Tighten the screw and nyloc until they are secure but turn smoothly using two fingers.
3. Attach the Upper Arm Assembly at joint H12 on PN10 and M12 on PN16 using an M3x10 screw and a nyloc nut.
4. Tighten the screw and nyloc until they are secure but turn smoothly using two fingers.
5. Attach the Upper Arm Assembly at joint H18 on PN19, M18 on PN15, and M18 on PN11 using an M3x14 screw and a nyloc nut.
6. Tighten the screw and nyloc until they are secure but turn smoothly using two fingers.