Everything else
Carbon Fiber Telescope Tube - 185 mm OD x 800 mm
- Bounding box
- 185.1 × 185.1 × 800.1 mm
- Engine
- Precision B-rep
- Parameters
- 22
- Published
- September 14, 2026
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Free to download and use. See the terms.
The prompt
Create a 3D CAD model of a carbon fiber tube and export it as a STEP file. Basic parameters: - Outer diameter: 185 mm - Inner diameter: 180 mm - Wall thickness: 2.5 mm - Total length: 800 mm - Modeling method: revolve/extrude a hollow cylinder, then cut the following holes. Coordinate system and datum: - Origin: center of the primary mirror end face. - Z axis: along the tube axis, positive direction toward the front end (away from the primary mirror end). - 0° datum: the centerline direction of the focuser. - Angle direction: positive counterclockwise when looking from the primary mirror end toward the front end. - All holes are radial through-holes (completely through the wall). Hole list (height measured from the primary mirror end face): 1. Height 5 mm: 4 holes of diameter 4.5 mm at angles 0°, 90°, 180°, 270°. 2. Height 681 mm: 2 holes of diameter 4.5 mm at angles -23.4°, +23.4°. 3. Height 724 mm: 1 hole of diameter 93.5 mm at angle 0°. 4. Height 724 mm: 2 holes of diameter 4.5 mm at angles 38.7°, 51.3° (center distance about 20.2 mm). 5. Height 767 mm: 2 holes of diameter 4.5 mm at angles -23.4°, +23.4°. 6. Height 785 mm: 4 holes of diameter 5.5 mm at angles 0°, 90°, 180°, 270°. Ensure all holes are radial through-holes. After generating the model, please provide the STEP file.
Parameters
| Name | Value | Range |
|---|---|---|
| Outer Diameter | 185 mm | 50 – 400 |
| Wall Thickness (ID = OD - 2t = 180 mm) | 2.5 mm | 1 – 20 |
| Total Length (Z, from mirror end face) | 800 mm | 100 – 2000 |
| Group 1 - Height | 5 mm | 0 – 800 |
| Group 1 - Hole Diameter | 4.5 mm | 1 – 20 |
| Group 1 - Start Angle | 0 deg | -180 – 180 |
| Group 2 - Height | 681 mm | 0 – 800 |
| Group 2 - Hole Diameter | 4.5 mm | 1 – 20 |
| Group 2 - Angle From 0 deg | 23.4 deg | 0 – 90 |
| Group 3 - Height (focuser port) | 724 mm | 0 – 800 |
| Group 3 - Port Diameter | 93.5 mm | 20 – 150 |
| Group 3 - Angle | 0 deg | -180 – 180 |
| Group 4 - Height | 724 mm | 0 – 800 |
| Group 4 - Hole Diameter | 4.5 mm | 1 – 20 |
| Group 4 - Angle Midpoint | 45 deg | -180 – 180 |
| Group 4 - Angular Separation (12.6 deg = 20.2 mm arc) | 12.6 deg | 1 – 90 |
| Group 5 - Height | 767 mm | 0 – 800 |
| Group 5 - Hole Diameter | 4.5 mm | 1 – 20 |
| Group 5 - Angle From 0 deg | 23.4 deg | 0 – 90 |
| Group 6 - Height | 785 mm | 0 – 800 |
| Group 6 - Hole Diameter | 5.5 mm | 1 – 20 |
| Group 6 - Start Angle | 0 deg | -180 – 180 |
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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