Enclosures and housings
4-Step Folding Staircase Display Stand
- Bounding box
- 1000.0 × 1200.0 × 600.0 mm
- Engine
- Precision B-rep
- Parameters
- 22
- Published
- August 23, 2026
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The prompt
Design a parametric 3D CAD model of a 4-step folding staircase display stand (used for displaying dolls/figurines), made of 4 independent folding bench units placed front-to-back in ascending height. Overall assembly: Footprint 1000mm wide x 1200mm deep x 600mm tall. 4 benches, each occupying a 300mm-deep zone, placed directly behind one another, each 150mm taller than the last (150mm, 300mm, 450mm, 600mm from floor to tread top for Bench 1 through Bench 4). Each bench consists of: 1 tread board: 1000mm (W) x 300mm (D) x 18mm (thick), flat rectangular plywood panel 4 legs: 40mm x 20mm cross-section timber battens, one at each corner, inset 50mm from the board's edges and ends Leg length varies per bench: Bench 1 = 130mm, Bench 2 = 280mm, Bench 3 = 430mm, Bench 4 = 580mm (so tread height plus 18mm board thickness equals the target step height) Each leg attaches to the tread underside via a hinge (revolute joint), allowing it to rotate between two states: 'open' (leg perpendicular/vertical, locked at 90 degrees via a fold-down locking strut or hook-and-eye latch) and 'folded' (leg rotated flat, parallel against the tread underside, for compact storage) Benches 3 and 4 (the taller ones) each include 2 stretchers, 300mm x 40mm x 18mm, connecting the front pair of legs and the back pair of legs at approximately one-third of the leg height up from the floor, to prevent side-to-side racking. Benches 1 and 2 do not need stretchers. Modeling requirements: Build one parametric bench template where leg length is the only variable, then generate all 4 benches from it Model both configurations (open and folded) for each bench Show the combined assembly with all 4 benches arranged in the staircase layout described above Hinge pivot holes should have ~0.5mm clearance for smooth rotation Ease/round tread and stretcher edges slightly; chamfer leg bottoms at the floor contact point Material: wood/plywood appearance for treads and stretchers, timber battens for legs, steel hardware for hinges and latches
Parameters
| Name | Value | Range |
|---|---|---|
| Tread Width | 1000 mm | 400 – 2000 |
| Tread Depth | 300 mm | 150 – 600 |
| Tread Thickness | 18 mm | 10 – 40 |
| Leg Cross-Section X | 40 mm | 20 – 80 |
| Leg Cross-Section Y | 20 mm | 10 – 60 |
| Leg Inset from Edges | 50 mm | 10 – 150 |
| Bench 1 Leg Length | 130 mm | 50 – 500 |
| Bench 2 Leg Length | 280 mm | 100 – 700 |
| Bench 3 Leg Length | 430 mm | 200 – 900 |
| Bench 4 Leg Length | 580 mm | 300 – 1100 |
| Hinge Vertical Gap | 2 mm | 1 – 6 |
| Hinge Block X Length | 50 mm | 30 – 100 |
| Hinge Block Y Depth | 25 mm | 15 – 60 |
| Hinge Block Z Height | 10 mm | 5 – 30 |
| Hinge Pivot Pin Diameter | 4 mm | 2 – 10 |
| Hinge Pivot Hole Clearance | 0.5 mm | 0.1 – 2 |
| Stretcher Thickness | 18 mm | 10 – 30 |
| Stretcher Height | 40 mm | 20 – 80 |
| Stretcher Length Along Depth | 300 mm | 100 – 600 |
| Stretcher Height Fraction of Leg | 0.33 | 0.2 – 0.6 |
| Bench 3 Has Stretchers | 1 | 0 – 1 |
| Bench 4 Has Stretchers | 1 | 0 – 1 |
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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