Compact Ganesh Mandapam for 100 mm Idol – Support-Free Columns & Hollow Gopuram

This is a purpose-built compact Ganesh mandapam designed for a nominal 100 mm-tall idol.

It is not simply a scaled-down version of the larger mandap. The wall thicknesses, connector clearances, support angles and structural transitions were independently resized for reliable printing with a 0.4 mm nozzle.

The base and covered roof are supplied as single pieces that fit a standard 220 × 220 mm print bed. Four one-piece columns use upward-sloping decorative steps and tapered hollow interiors. The tiered gopuram has a bottom-open hollow chamber and an internal mounting frame to reduce filament while keeping the mounting points connected.

Broad, simplified details preserve the traditional temple appearance without relying on fragile miniature decorations.

Finished dimensions

• Recommended idol envelope: 90 × 70 × 100 mm

• Base: 180 × 150 × 18 mm

• Covered roof: 190 × 160 × 18 mm

• Clear space between column collars: approximately 118 × 84 mm

• Clear platform-to-roof height: approximately 130 mm

• Gopuram base: 90 × 90 mm

• Overall height with kalash: approximately 288 mm

Measure the actual idol at its widest and deepest points, including its own base, before printing.

Parts to print

• 1 × Fit_Test_Coupon_PRINT_FIRST.stl

• 1 × Base_Platform.stl

• 4 × Column_Support_Free_PRINT_4.stl

• 1 × Roof_Canopy.stl

• 1 × Gopuram_Crown_Hollow.stl

• 1 × Kalash_Finial.stl

• 1 × Connector_Pegs.stl

The connector sheet contains four required crown pins plus two spares, and four required column-to-roof pins plus one spare.

Suggested print settings

• Material: PETG preferred

• PLA/PLA+ is acceptable away from heat and direct sunlight

• Nozzle: 0.4 mm

• Layer height: 0.20–0.24 mm

• Base and roof: 4 walls, 5 top/bottom layers, 18–25% gyroid or cubic infill

• Columns: 4–5 walls, 20–30% infill

• Connector pegs: 5 walls or 80–100% infill

• Gopuram: 3–4 walls, 8–12% infill

• Do not generate supports inside the gopuram

• Print columns socket-end down with supports disabled and an 8–10 mm brim

• Print the kalash upright with supports disabled and a 5–8 mm brim

• Print the base, roof and gopuram on their broad flat undersides

The roof contains four short 10.5 mm socket bridges, and the crown contains four short 6.5 mm socket bridges. These should print without generated supports on a reasonably tuned printer.

Assembly

1. Print the fit-test coupon first.

2. Insert one column into each base socket.

3. Insert four 10 mm double-ended pins into the column-top sockets.

4. Lower the roof evenly onto the four pins.

5. Insert four 6 mm pins into the roof-top sockets.

6. Lower the hollow gopuram onto the crown pins.

7. Insert the kalash into the top socket.

8. Confirm the structure sits flat without rocking before placing the idol.

Glue is optional for temporary use. For permanent assembly, glue only after completing a successful dry fit.

Safety and validation

The roof is intended to carry only the printed crown and very lightweight decorations. Digital mesh validation does not establish a physical load rating, impact resistance, long-term creep strength or printer-specific fit.

Never place a lit diya, camphor flame, incense ember or hot metal tray on or directly beneath printed plastic. Keep flames on a separate stable metal or stone tray well in front of the mandap.

All seven supplied STL files passed checks for watertightness, consistent winding, zero boundary edges, zero non-manifold edges, positive enclosed volume and correct print-bed placement.

Physical connector fit remains unverified until the coupon and a cautious dry assembly have been printed.