Enclosures and housings
Pneumatic Valve Adapter
- Bounding box
- 30.0 × 30.0 × 53.0 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- October 28, 2026
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The prompt
Role: You are an expert mechanical CAD engineer and OpenSCAD programmer. Task: Generate a 3D model code for a Pneumatic Valve Adapter as described below. Pay special attention to the through-hole and thread specifications. Overall Dimensions: Total Length (Height): 53 mm. Part 1: Top External Thread & O-ring Thread Specification: M18 * 1.5 (Metric thread). Thread Length: Approximately 15 mm. O-ring Groove: Located at the base of the external thread. A circular groove for an O-ring (Rubber seal). Part 2: Main Cylindrical Body Outer Diameter: Approximately 30 mm. Surface Texture: Straight knurling (vertical ridges) covering the entire lateral surface for grip. Part 3: Bottom Internal Thread Thread Specification: 5/8-18UNF (Unified National Fine thread). Type: Internal threaded hole at the bottom face. Crucial Feature: Through-Hole (Fluid Path) This is a pneumatic adapter, so the center must be a THROUGH-HOLE. The hole goes completely through the part from the top (inside the M18 thread) to the bottom (inside the 5/8-18UNF thread). Inner Diameter (ID): Approximately 8mm to 10mm (an estimate suitable for gas/air flow). Output Requirement: Please provide the OpenSCAD code. Use appropriate libraries (like BOSL2) or difference() functions to create the external/internal threads and knurling. Ensure the central hole is completely subtracted so it's a through-hole.
Parameters
| Name | Value | Range |
|---|---|---|
| Main Body Diameter | 30 mm | 10 – 60 |
| Main Body Height | 38 mm | 10 – 100 |
| Top Thread Major Diameter | 18 mm | 6 – 40 |
| Top Thread Length | 15 mm | 5 – 50 |
| Top Thread Pitch | 1.5 mm | 0.5 – 4 |
| Central Through Hole Diameter | 9 mm | 2 – 20 |
| Bottom Bore / Tap Drill Diameter | 14.5 mm | 5 – 30 |
| Bottom Bore Depth | 20 mm | 5 – 50 |
| Bottom Thread Major Diameter | 15.88 mm | 6 – 35 |
| Bottom Thread Pitch | 1.41 mm | 0.5 – 4 |
| O-ring Groove Center Radius | 15 mm | 5 – 50 |
| O-ring Groove Z Position | 36 mm | 0 – 100 |
| O-ring Cord Radius | 1.5 mm | 0.5 – 5 |
| Knurl Groove Count | 40 count | 0 – 100 |
| Knurl Groove Width | 2 mm | 0.5 – 10 |
| Knurl Depth | 1 mm | 0.1 – 5 |
| Knurl Height | 34 mm | 0 – 100 |
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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