Brackets and mounts
Robotic Finger Base Segment
- Bounding box
- 45.0 × 32.0 × 31.0 mm
- Engine
- Precision B-rep
- Parameters
- 14
- Published
- November 2, 2026
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Free to download and use. See the terms.
The prompt
Design the base segment of a 3D-printable robotic finger. Output as a single STEP file in millimeters. Specifications: Main Body: A solid rectangular block 45mm long, 16mm wide, and 16mm thick. Keep the left and right sides perfectly flat for 3D printing. Palm Pivot: At the bottom-back corner of this main body, cut a 3.4mm diameter horizontal through-hole (passing completely through the 16mm width). This is the main pivot point. Lever Arm: From that same bottom-back corner, extrude a solid rectangular lever arm pointing straight down. This downward arm should be 15mm long, 16mm wide, and 8mm thick. Linkage Hole: Near the bottom end of this downward lever arm, cut another 3.4mm diameter horizontal through-hole (passing through the 16mm width). Next Knuckle: At the front tip of the main body, create a hinge bracket. Cut an 8mm wide slot through the center, leaving two 4mm thick side walls. Cut a 3.4mm horizontal hole through these walls.
Parameters
| Name | Value | Range |
|---|---|---|
| Main body length | 45 mm | 20 – 100 |
| Main body width | 16 mm | 8 – 50 |
| Main body thickness | 16 mm | 5 – 40 |
| Lever arm length | 15 mm | 5 – 40 |
| Lever arm thickness | 8 mm | 2 – 20 |
| Palm pivot hole diameter | 3.4 mm | 1 – 8 |
| Palm pivot x offset from back | 5 mm | 2 – 20 |
| Palm pivot z offset from bottom | 5 mm | 2 – 20 |
| Linkage hole diameter | 3.4 mm | 1 – 8 |
| Linkage hole offset from arm bottom | 3 mm | 2 – 10 |
| Knuckle slot width | 8 mm | 2 – 14 |
| Knuckle slot depth | 12 mm | 3 – 30 |
| Knuckle hinge hole diameter | 3.4 mm | 1 – 8 |
| Knuckle hinge hole offset from front | 6 mm | 3 – 20 |
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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