Gears and transmission
6-DOF DIY Bracket Robot Arm
- Bounding box
- 77.4 × 70.0 × 290.9 mm
- Engine
- Precision B-rep
- Parameters
- 37
- Published
- November 12, 2026
Download
Free to download and use. See the terms.
The prompt
make a 6 degree of freedom robot arm,A 6-DOF DIY robotic arm constructed entirely from black anodized aluminum U-brackets and L-brackets. The joints are formed by exposed rectangular hobby servo motors acting as the pivot points. The base is a flat square metal plate with a rotating servo. The end effector is a mechanical 2-finger robotic claw gripper with visible gear teeth, not a flat flange. The overall aesthetic is mechanical, exposed, and maker-style, with visible screws and brackets.
Parameters
| Name | Value | Range |
|---|---|---|
| Base plate width | 70 mm | 40 – 120 |
| Base plate thickness | 5 mm | 3 – 10 |
| Base bolt count | 4 count | 3 – 8 |
| Base bolt diameter | 4.5 mm | 2 – 8 |
| Base bolt circle diameter | 50 mm | 20 – 100 |
| Yaw servo width | 40 mm | 20 – 70 |
| Yaw servo height | 30 mm | 15 – 50 |
| Torso bracket width | 30 mm | 20 – 60 |
| Torso height | 70 mm | 40 – 120 |
| Shoulder/elbow servo half-size | 15 mm | 8 – 30 |
| Shoulder/elbow servo width | 20 mm | 10 – 40 |
| Roll collar half-size | 12 mm | 6 – 25 |
| Roll collar length | 28 mm | 10 – 60 |
| Roll collar position ratio | 0.45 ratio | 0.1 – 0.9 |
| Wrist servo half-size | 12 mm | 6 – 25 |
| Wrist servo width | 16 mm | 8 – 35 |
| Arm bracket half-width | 10 mm | 5 – 25 |
| Upper arm length | 80 mm | 40 – 140 |
| Forearm length | 75 mm | 40 – 140 |
| Wrist link length | 30 mm | 10 – 70 |
| Bracket wall thickness | 3 mm | 2 – 6 |
| Gripper base width | 40 mm | 20 – 70 |
| Gripper base thickness | 4 mm | 2 – 10 |
| Gripper bolt diameter | 2.5 mm | 1.5 – 6 |
| Gripper bolt count | 4 count | 2 – 8 |
| Gripper bolt circle diameter | 28 mm | 10 – 60 |
| Gripper boss diameter | 10 mm | 4 – 25 |
| Gripper boss height | 12 mm | 5 – 30 |
| Finger length | 35 mm | 15 – 70 |
| Finger width | 10 mm | 4 – 25 |
| Finger thickness | 6 mm | 2 – 15 |
| Gripper opening gap | 12 mm | 4 – 40 |
| Tooth count per finger | 5 count | 2 – 12 |
| Tooth depth | 2 mm | 0.5 – 5 |
| Shoulder angle | 20 deg | -90 – 90 |
| Elbow angle | -40 deg | -120 – 120 |
| Wrist angle | 15 deg | -90 – 90 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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