Cradle Bill of Materials — v1, v2, v3
Every OpenPoleMount cradle is fully 3D-printed: a cradle body plus the shared printed T-handle thumbscrew. There are no proprietary or purchased parts — the only consumable is filament. Each cradle is built on the OpenPoleMount mounting block and clamps to a standard IV pole the same way.
General-purpose hardware
These are general-purpose mounting hardware, not medical devices. See the Safety & Disclaimer.
Shared part — thumbscrew
| Part | File | Qty | Filament (measured) |
|---|---|---|---|
| T-handle Thumbscrew | thumbscrew_v14_flat_Thandle.stl |
1 | ~14 g (~11 cm³) |
All three cradles use this same thumbscrew.
v3 — form-fitting cradle (current)
| Item | Value |
|---|---|
| Cradle file | OpenPoleMount_IV-Pole_v3.stl |
| Printed size (L × W × H) | 125 × 100 × 66 mm |
| Filament, cradle body | ~109 g PLA (~88 cm³) · ~91 g PETG (~74 cm³) — figures come from different slicer profiles, not a material property; your slicer's estimate governs |
| + thumbscrew | ~14 g |
| Print time | ~3 h 10 m (PLA, 0.2 mm) |
v2 — universal holder (available now)
| Item | Value |
|---|---|
| Cradle file | OpenPoleMount_IV-Pole_v2.stl |
| Printed size (L × W × H) | 126 × 105 × 65 mm |
| Filament, cradle body | ~197 g PLA (~159 cm³) |
| + thumbscrew | ~14 g |
| Print time | ~6–8 h (PLA, 0.2 mm) |
v1 — accessory box (legacy)
| Item | Value |
|---|---|
| Body file | OpenPoleMount_IV-Pole_v1.stl |
| Printed size (L × W × H) | 126 × 105 × 65 mm |
| Filament, body | ~206 g PLA (~166 cm³) |
| + thumbscrew | ~14 g |
| Print time | ~6.5 h (PLA, 0.2 mm) |
Consumable — filament
| Material | Spec | Notes |
|---|---|---|
| PLA (validated) or PETG | 1.75 mm, any reputable brand | No specific brand required. PETG suits higher-stress or warmer environments but is not yet strength-tested for these designs. Where PLA and PETG filament figures differ on this page, they were measured with different slicer profiles — same STL geometry. |
Filament figures above are measured from real single-unit slices at the recommended 0.2 mm settings; your slicer reports the exact figure for your setup.
Print specification (safety-critical)
All cradles print at or above the shared recommended minimums:
| Parameter | Recommended minimum |
|---|---|
| Material | PLA (or PETG) |
| Layer height | 0.2 mm |
| Walls | ≥1 mm |
| Top/bottom | 2 mm |
| Infill | ≥25 %, 3D honeycomb (non-concentric — not lines/grid) |
| Supports | None required |
| Orientation | Cradle: pole channel vertical (layers perpendicular to clamp load). Thumbscrew: flat, handle face down. |
Full details: v3 Print Guide · v2 Print Guide · About v1.
Source files
Native editable source CAD (Blender .blend) for every cradle lives in the
repository's source/
folder; the print-ready STL meshes are under
stl/. Both are
available for remixing under the hardware license (CERN-OHL-W-2.0).
Fully 3D-printed — no BOM entries for purchased hardware. Provided for informational purposes only; verify every printed part before use.