Enclosures and housings
BBB Microfluidic Fixture
- Bounding box
- 624.0 × 30.0 × 20.0 mm
- Engine
- Precision B-rep
- Parameters
- 26
- Published
- November 8, 2026
Download
Free to download and use. See the terms.
The prompt
Create an editable, dimensionally parameterized 3D CAD model of the uploaded PMMA–PDMS Blood-Brain Barrier (BBB) microfluidic fixture. Reproduce the five-layer structure: 1. Top PMMA plate with four M3 screw holes and two vertical vascular inlet/outlet ports. 2. Top PDMS layer with an internal vascular microfluidic channel and two vertical ports. 3. Porous PET membrane (actual thickness 0.4 µm). 4. Bottom PDMS layer with a brain-side channel and two lateral tubing connections. 5. Bottom PMMA plate with four screw holes and lateral tubing-access cutouts. Add four stainless-steel fastening screws and four fluid tubing connections. Create both exploded and fully assembled configurations. Use transparent PMMA, translucent blue PDMS, white PET membrane and metallic screws. Use millimetres, maintain accurate alignment between all layers, channels and ports, and keep every component separately editable. Generate realistic 3D solid geometry, not just a visual illustration. Do not invent missing dimensions; use configurable parameters. Export in STEP and STL formats if supported.
Parameters
| Name | Value | Range |
|---|---|---|
| Layout Gap | 10 mm | 1 – 100 |
| Plate Length | 40 mm | 10 – 120 |
| Plate Width | 30 mm | 10 – 100 |
| Top PMMA Thickness | 4 mm | 1 – 15 |
| Bottom PMMA Thickness | 4 mm | 1 – 15 |
| M3 Clearance Hole Dia | 3.4 mm | 2 – 6 |
| Screw Hole Spacing X | 30 mm | 5 – 100 |
| Screw Hole Spacing Y | 20 mm | 5 – 80 |
| Top PDMS Thickness | 2 mm | 0.5 – 10 |
| Bottom PDMS Thickness | 2 mm | 0.5 – 10 |
| Top Vascular Channel Width | 0.8 mm | 0.2 – 5 |
| Top Vascular Channel Depth | 0.4 mm | 0.1 – 3 |
| Bottom Brain Channel Width | 1 mm | 0.2 – 5 |
| Bottom Brain Channel Depth | 0.4 mm | 0.1 – 3 |
| Top Port Spacing | 20 mm | 2 – 100 |
| Port Diameter | 1.7 mm | 0.5 – 8 |
| PET Membrane Thickness | 0 mm | 0.0001 – 0.01 |
| Screw Shank Diameter | 3 mm | 1 – 8 |
| Screw Shank Length | 16 mm | 3 – 80 |
| Screw Head Diameter | 5.5 mm | 2 – 15 |
| Screw Head Height | 3 mm | 0.5 – 10 |
| Tubing Outer Diameter | 1.6 mm | 0.5 – 10 |
| Tubing Inner Diameter | 0.8 mm | 0.2 – 8 |
| Tubing Insertion Length | 8 mm | 2 – 50 |
| Bottom Plate Slot Width | 6 mm | 1 – 30 |
| Bottom Plate Slot Depth | 8 mm | 1 – 40 |
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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