Customizable Akash Kandil Lantern: Stars, Dots & Diamonds (LED Only)

Change the pattern, opening density, size, top hanging opening and bottom opening with native TrueGeometry Playground commands. Three live-tested presets are included: Star M, Dots S and Diamond L.

LED ONLY. Use a battery-powered LED tealight, never a real candle, oil diya, incandescent bulb or mains-powered lamp. This is a decorative shade, not a certified light fitting, electrical enclosure or load-rated hanging product. It has not been physically test-printed, heat-tested or suspension-tested.

CUSTOMIZE IT

- style: star, dots or diamond.

- R/H: body apothem and panel height in mm.

- PX/PY: horizontal and vertical pattern pitch in mm.

- HOLE: shape-dependent opening size, not a universal diameter.

- HANG: nominal across-flats size of the polygonal top hanging opening.

- BOT_OPEN: nominal inner apothem of the bottom ring.

HOLE means circle radius for dots, outer radial size for stars, and half the unrotated square side for diamonds. Recheck pitch when switching style. Only the three listed presets have been run live; other values need their own geometry and slicer checks.

PRESETS

Star M: R45, H110; nominal body 90 mm across flats; five-point stars; PX14/PY17; HOLE5.5; top opening 6 mm; bottom opening nominal 70 mm across flats. Export bounds approximately 95.5 x 112.8 x 95.5 mm (X/Y/Z, Y-up).

Dots S: R35, H85; nominal body 70 mm across flats; round openings; PX10/PY12; HOLE3.5 (7 mm circle diameter); top opening 6 mm; bottom opening nominal 50 mm across flats. Export bounds approximately 74.6 x 87.8 x 74.6 mm.

Diamond L: R55, H140; nominal body 110 mm across flats; rotated-square openings; PX17/PY20; HOLE6 (12 mm square side before rotation); top opening 8 mm; bottom opening nominal 90 mm across flats. Export bounds approximately 116.3 x 142.8 x 116.3 mm.

All presets: 12 panels, 1.4 mm wall, 2 mm panel overlap. Bottom opening inner apothem is R-10, leaving a nominal 10 mm lip toward each panel plane. It is not a tested holder for any particular LED. Check insertion, fit and retention before use. No LED, holder or hanging hardware is included.

NATIVE BUILD METHOD

A flat /sm_part panel receives a /sm_perforated grid from a sketch profile, then repeats 12 times around Y. The top cap and bottom ring are each built from 12 trapezoid wedges. All geometry was created with native Playground commands. There is no external geometry generation, no union and no repeated 3D Boolean cutting.

Neighbouring panels overlap intentionally. Each STL contains 36 closed overlapping shells: 12 panels, 12 cap wedges and 12 base wedges. They are positioned as one lantern, not separate assembly parts. Check that your slicer handles overlaps as connected volumes. Strength improvement has not been measured.

MESH VERIFICATION

Reported edge-incidence check per connected shell:

- Star M: 12,912 triangles; 36/36 shells watertight; zero degenerate triangles.

- Dots S: 19,152 triangles; 36/36 shells watertight; zero degenerate triangles.

- Diamond L: 1,872 triangles; 36/36 shells watertight; zero degenerate triangles.

These results do not establish a single manifold union, print success, strength or heat safety. Photos are exported-mesh renders, not physical prints. Gold is a presentation colour and minor shading artifacts are visible. No illuminated prototype or measured light pattern is shown.

PRINT NOTES - UNTESTED STARTING SUGGESTIONS

The export is Y-up. In a Z-up slicer rotate +90 degrees about X, then check the actual orientation. For the suggested print orientation, place the top cap on the bed with the large bottom opening facing up. This avoids the broad cap bridge, but the bottom lip still needs an overhang/support check.

Start with a 0.2 mm layer height and a suitable PLA/PETG profile if desired. Check actual wall toolpaths rather than assuming a perimeter count. Neither material makes flame or hot-lamp use safe.

Inspect the first layer at all 12 cap seams, panel overlaps, ring-to-wall contacts, opening edges and the inward bottom lip. Supports may be needed. Reducing the lip through BOT_OPEN is a new, untested configuration. Check full export bounds against your printer's build volume.

Inspect the printed cap and cord fit. Test suspension at low height over a safe surface before use. No load rating is provided. Use only a suitable battery-powered LED tealight and keep the shade away from heat.

REBUILD AND CUSTOMIZE

Open https://www.truegeometry.com/CoreWebGLTG/KBEAgentHTTP.html

Start an empty scene, open Script, paste ONE full recipe below and use normal Run, not Clean & Run. Inspect, then export STL. Run each preset separately. Keep the /scale 1 commands; they are part of the tested transformed sheet-metal pattern workflow.

The companion lantern_recipe.py writes native command text only. Its no-argument settings are NOT the tested Star M: generic HOLE4 and pitch11/14 differ from tested HOLE5.5 and pitch14/17. Use explicit preset arguments:

Star M: style='star', R=45, H=110, T=1.4, N=12, OV=2.0, PX=14, PY=17, HOLE=5.5, HANG=6, BOT_OPEN=35

Dots S: style='dots', R=35, H=85, T=1.4, N=12, OV=2.0, PX=10, PY=12, HOLE=3.5, HANG=6, BOT_OPEN=25

Diamond L: style='diamond', R=55, H=140, T=1.4, N=12, OV=2.0, PX=17, PY=20, HOLE=6, HANG=8, BOT_OPEN=45

The Script runner does not substitute variables into the pasted recipe. Generate literal command text first.

Full TrueGeometry Playground commands: in the blog article https://blog.truegeometry.com/0_0_0_0/blogs/post-de2d56cd.html and the attached recipe files.

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