3D Printed Robotic Arm MK2

admin | 05.12.2025

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3D модель 3D Printed Robotic Arm MK2 - фото 1

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This is a 3D printed robotic arm that is an enhanced version of my previous smaller one, EEZYbotARM, which Inamed MK2 (make 2).

It is slightly larger and stronger, allowing for an acceptable payload capacity. The arm is designed for educational purposes, providing suitable hardware to focus on exploring its potential applications.

Main Features:

Kinematic structure scaled down from ABB IRB460 with a 1:7 ratio.
Replaceable clamp with quick coupler.
Internal cable routing in the main larger arms.
Vertical axis supported by spheres.

Additionally, I am evaluating whether to add a counterweight or balancing spring to the main arm.

Non-printed parts list:

3 x 995 or 946 servos
1 x SG90 servo
1 x M6 self-locking nut
1 x M6x25 screw
2 x M3 self-locking nuts
2 x M3 x 20 screws
1 x M3 x 10 hex recessed head screw
9 x M4 self-locking nuts
1 x M4 x 40 screw
1 x M4 x 30 screw
5 x M4 x 20 screws
1 x M4 x 60mm threaded rod
1 x M4 x 32mm threaded rod
25 x Ø6mm ball spheres
1 x 606zz bearing
Some M4 washers

Software / Firmware:

There are several ways to control the arm depending on the desired results. The choice of method depends on whether you want to move it freely or make it repeat a loop. I found it easy to use a Pololu Mini Maestro card, which doesn't require writing any code.

I also created an Instructables: Android APP to control a 3D Printed Robot where you can find example code.

Happy Roboting!