CORDA · Twisted pen cup

One original pen cup with eighteen twisting flutes, a smooth interior and a broad flat foot. For pens, pencils and small dry desk tools. One STL, no assembly.

Dimensions: 88.901 × 79.941 × 108 mm. Floor: 3.6 mm. Import CORDA_Pen_Cup_mm.stl in millimetres at 100%, flat foot down and opening up. Use ordinary multi-wall slicing, not spiral vase mode. Check the layer preview, wall continuity, base chamfer, adhesion and required supports before printing.

For a 0.4 mm nozzle, 0.20 mm layers, four wall lines and six bottom layers are starting settings to inspect, not a tested profile. Use the printer and filament maker's temperature recommendations. Check the full footprint including any brim against the usable bed.

Digital mesh checks found one closed connected body, no open/non-manifold edges, no inconsistent winding, no duplicate or zero-area triangles, and positive volume. Sampled wall measurements are not proof of a global minimum. The preview is a render of the actual exported geometry, not a photograph. STL contains no colour.

No physical print or machine-specific slicer validation has been performed. Print time, material use, adhesion, strength, loaded stability and watertightness remain unverified. Heavy or tall contents can tip the cup. Not for food, drinking, flame, hot objects or load-bearing use.

Files in this print kit: the original STL, this English guide, a Russian guide, the existing STL licence and SHA256SUMS.txt. No editable Blender files or generator code are included.

Printable geometry: CC BY-NC 4.0. Attribution: CORDA by 3D4.us. https://creativecommons.org/licenses/by-nc/4.0/
Editable sources, site software and preview images are outside this STL licence. See LICENSE.txt.
