Parametric S-Bench

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Bounding box: 4637.0 × 777.8 × 450 mm
Engine: 3D Printing B-rep
Parameters: 20
Published: November 7, 2026

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The prompt

Now refine the main bench geometry. Create a continuous organic S-shaped seating surface. The shape should have: - A smooth flowing curve. - A wider rounded end on one side. - A narrower middle transition. - A wider curved seating area on the opposite end. - Smooth tangent transitions between all curved sections. Use adjustable control points or curve parameters in Grasshopper. The bench must look sculptural and organic, not like a simple straight bench. Keep the geometry editable and connected to the Grasshopper definition.

Parameters

Name	Value	Range
Overall length along X	4500 mm	2000 – 6000
Overall footprint width along Y	900 mm	500 – 1500
Seat height, top of cushions	450 mm	250 – 700
Spine width in plan	200 mm	120 – 400
Spine height from the floor	340 mm	150 – 600
Spine sweep segments	40 mm	8 – 120
How much the spine follows the plan profile	0.6 mm	0 – 1
Number of ribs	40 mm	10 – 80
Rib length across the seat	400 mm	200 – 700
Rib thickness along the spine	26 mm	12 – 60
Rib vertical height	60 mm	20 – 200
Cushion length along the curve	1600 mm	400 – 2200
Cushion width	350 mm	150 – 600
Cushion thickness	80 mm	30 – 200
Cushion sweep segments	16 mm	4 – 40
Width factor at the A (rounded) end	1.1 mm	0.4 – 1.6
Width factor at the middle transition	0.55 mm	0.25 – 1.2
Width factor at the B (seating) end	0.9 mm	0.4 – 1.6
Rounded-cap length as fraction of bench	0.12 mm	0.02 – 0.3
Width retained at the very tip	0.28 mm	0.05 – 0.6

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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