Brackets and mounts
DNA Enrichment Chamber with Electrodes and O-ring
- Bounding box
- 132.5 × 40.0 × 16.8 mm
- Engine
- Precision B-rep
- Parameters
- 21
- Published
- August 7, 2026
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Free to download and use. See the terms.
The prompt
Create a fully parametric CAD model of a circular laboratory prototype for a rotating electric field DNA enrichment chamber. Overall body Circular transparent PMMA housing. Overall diameter: 40 mm. Overall height: 14 mm. Bottom side completely open for PCB installation. Flat upper surface. Sample chamber Centered cylindrical chamber. Diameter: 10 mm. Depth: 2.5 mm. Working volume: approximately 200 µL. Flat bottom. Smooth walls. Electrode system 16 equally spaced electrode guide holes. Angular spacing: 22.5°. Guide hole diameter: 1.0 mm. Electrode diameter: 0.9 mm. Electrode center radius: 13 mm. Electrode geometry Each electrode is removable. Each electrode consists of: 15 mm horizontal section. 90° bend. 2.5 mm vertical section entering the chamber. Only the vertical tip contacts the liquid. Horizontal section remains outside the housing for wire soldering. Guide tubes Guide holes are designed for removable electrode sleeves. Electrodes slide into the guide holes. No glue required. O-ring Create a circular O-ring groove around the sample chamber. Groove depth: 1 mm. Groove width: 1.5 mm. Bottom Bottom remains open. Include supports for future PCB mounting. No electronics. Material PMMA / Acrylic. Design goals Fully manufacturable. Injection molding friendly. 3D printable. High dimensional accuracy. Perfect radial symmetry. Parametric design. Output Generate: STEP STL Fully editable parametric CAD model. Exploded assembly.
Parameters
| Name | Value | Range |
|---|---|---|
| Layout Gap | 50 mm | 30 – 150 |
| Housing Overall Diameter | 40 mm | 20 – 100 |
| Housing Overall Height | 14 mm | 5 – 50 |
| Sample Chamber Diameter | 10 mm | 2 – 20 |
| Sample Chamber Depth | 2.5 mm | 0.5 – 10 |
| Guide Hole Diameter | 1 mm | 0.5 – 2 |
| Guide Hole Pitch Diameter | 26 mm | 10 – 35 |
| Number of Guide Holes | 16 | 2 – 36 |
| Groove Center Diameter | 12.2 mm | 10 – 15 |
| Groove Width | 1.5 mm | 0.5 – 3 |
| Groove Depth | 1 mm | 0.5 – 2 |
| Number of PCB Bosses | 3 | 0 – 8 |
| Boss Outer Diameter | 5 mm | 3 – 10 |
| Boss Height | 3 mm | 1 – 10 |
| Boss Clearance Hole Diameter | 2.5 mm | 1 – 5 |
| Boss Pitch Circle Diameter | 30 mm | 20 – 38 |
| O‑ring Cross‑section | 1.2 mm | 0.5 – 3 |
| O‑ring Inner Diameter | 11 mm | 5 – 20 |
| Electrode Wire Diameter | 0.9 mm | 0.3 – 2 |
| Horizontal Lead Length | 15 mm | 5 – 30 |
| Vertical Tip Length | 2.5 mm | 1 – 5 |
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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