47 lines
2 KiB
Markdown
47 lines
2 KiB
Markdown
# CR80 / ID-1 Card Holder
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**Status:** Digitally validated; physical card fit and flex life still require testing.
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The editable generator is [cr80-card-holder.scad](cr80-card-holder.scad). FDM printing in PLA or PETG; PETG is preferred for repeated flexing.
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## Defaults and important controls
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Portrait CR80 card, PETG Durable profile, flex tabs, top thumb notch, and top slot attachment.
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**Fit and tolerance:** Defaults use 0.30 mm XY and 0.20 mm Z clearance. Test with a sacrificial card.
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Open the SCAD file in OpenSCAD and use **Window → Customizer** to change the documented parameters. Dimensions are millimetres.
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## OpenSCAD and export
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This generator is maintained and validated with a recent OpenSCAD Nightly build.
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1. Open the SCAD file and select parameters in Customizer.
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2. Press **F6** for a full render.
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3. Use **File → Export → Export as STL** for printable 3D output.
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4. Slice with the actual printer, nozzle, material, and layer profile.
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## Included examples
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| Preset | STL | Digital render |
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| --- | --- | --- |
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| Default portrait flex tabs | [Download](stl-files/default-flex-tabs.stl) | [Preview](images/default-flex-tabs.png) |
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| Landscape abuse-proof security rails | [Download](stl-files/landscape-security-rails.stl) | [Preview](images/landscape-security-rails.png) |
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| Full bezel with round attachment | [Download](stl-files/full-bezel-round-attachment.stl) | [Preview](images/full-bezel-round-attachment.png) |
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## Printing and fabrication
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Print with the broad back plate flat on the bed.
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The included STL files passed digital mesh and slicer checks. Digital validation does not establish physical fit, strength, fatigue life, or material suitability.
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## Known limitations
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- Card thickness and printer extrusion vary.
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- Retention tabs and attachments need physical fatigue and load testing.
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## License
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The SCAD source, STL models, renders, and documentation in this public package are licensed under **CC BY-NC 4.0**. See the repository [LICENSE](../LICENSE.md).
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