Custom Socket Head Bolt Cap
Print Profile(7)
Description
This is a parametric, customizable cap for socket head bolts (e.g., DIN 912) designed for FDM 3D printing. The cap features a clean, flat
top with optional top and bottom fillets for a polished look. It includes a hollow insert that fits snugly over the bolt head — perfect for covering bolt heads in visible assemblies, protecting from dust, or achieving a finished look.
You can easily adapt this design to fit bolts of various sizes by adjusting the variables in OpenSCAD.
Parameters Explained:
| Variable | Description |
|---|---|
| insert_outer_diameter | match this to the bolt head diameter plus a small tolerance. (s) |
| insert_inner_diameter | Inside diameter of the insert (insert thickness = insert_outer_diameter - insert_inner_diameter). |
| insert_height | Height of the cylindrical insert. Should match the height of the bolt head. (t) |
| top_diameter | Diameter of the flat cap on top. This can be larger for better coverage or aesthetics. (dk) |
| top_thickness | Thickness of the top cap. 1.5–2 mm works well. |
| tolerance | Clearance added to the inner hole to account for printer tolerances. Typically 0.2–0.4 mm. |
| fillet_height | Height of the bevel (simulated fillet) on top and bottom edges. Makes edges feel smoother and look cleaner. |
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Print Settings:
- Recommended Material: PLA, PETG, ABS
- No Supports Needed
- Layer Height: 0.2 mm or finer for smoother top
- Wall Count: 2–3 for strength
- Infill: 10–20% is sufficient
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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