Beer/Beverage Bottle Dust Cap — simple glass bottle enclosing (v1–v8)

🧩 Description / Design Concept

Simple protective cap designed to cover the mouth of a glass bottle (beer or soft drink) after opening. It helps keep out sand, insects, dust and other debris.

This is not a sealing closure – it does not make the bottle leak-proof or child-proof. There is a risk of leakage or accidental opening, so always keep the opened bottle upright.

The more slit cuts in the wall, the higher the flexibility – pick the variant that works best for your bottle and material.

Real-life photos show prints made in PLA, which has been tested and confirmed working (especially for v3–v8).

🖨️ Printing orientation & tips

Print on the top surface of the cap (top face on the bed) – the model is optimised for this orientation.

No supports needed.

Use Concentric pattern for top and bottom surfaces for clean, even edges.

Adhesion: PEI smooth or textured sheet with glue stick or another adhesion aid recommended.

🛠️ Recommended settings

Layer height: 0.10–0.16 mm

Walls / perimeters: 3–4

Infill: low infill, 10–20% Gyroid (lower infill helps add flexibility, especially with PLA)

Material:

TPU/TPE (recommended) for best flexibility and removal comfort

PETG/ABS/ASA as durable semi-flex options

PLA works and is tested, especially with v3–v8

Supports: Not required

📝 Notes

Variants:

v1 & v2 – can be hard to remove and may crack in rigid PLA; better suited to flexible materials.

v3–v8 – PLA-compatible, work very well with rigid materials too.

Fit tuning:

First print one cap at 100% scale and test on your bottle.

If the fit is too tight/loose, slightly scale uniformly ±1–3%, or fine-tune with Horizontal Expansion (XY Compensation) ±0.05–0.15 mm instead of changing height.

Usage reminder: dust/bug protection only – keep the bottle upright to avoid spills.

Hand-wash recommended; avoid high heat that could deform the print.

🔧 Assembly

No additional assembly required. It prints as a single piece; simply push the cap over the bottle mouth and check that it grips securely.

☕ Support & Follow

If you like my designs, follow me — more functional everyday prints are coming soon, including tool organizers, workshop helpers, and printable accessories.

You can buy me a coffee simply by printing and boosting my files — nothing more 😉

Most of my uploads are completely free, so I’ll be truly happy if you decide to reward my work in any way.

If you’re interested in commercial use of this model, please contact me by leaving a comment.

Beer cap, beverage cap, simple glass bottle enclosing

0.16mm layer, 3 walls, 15% infill

0.2mm layer, 2 walls, 15% infill