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L-shaped stairs with a landing or winders

In your harnessBlender toolMIT

Generate quarter-turn stairs: two straight flights joined by a square landing or by three winder treads cut at 30 degree steps from the inner corner, turning left or right, with an optional support block. Use it where a stair must turn a corner.

Render of L-shaped stairs with a landing or winders
The render its check recorded in Blender 5.2.1, 192 by 192 pixels.

What it takes and gives

Operator
baltor.stairs_l_shaped
Parameters
first_steps, second_steps, corner, turn, rise, going, width, tread_thickness and 1 more
Result
One mesh object named L-Shaped Stairs made of closed treads.
Blender
4.2 or later
Axes
Blender Z up, -Y forward
Units
metres

Limits. Winders radiate from the inner corner, so their inner ends are very narrow; real stairs often offset the pivot to keep a minimum inner tread, which this generator does not do. No stringers, risers or handrail. Parts are separate closed solids in one mesh. Verified in Blender 5.2.1; written for the 4.2 API.

Details

Kind
Blender tool
Engine
Blender 4.2 or later
Files
11 files, 111.4 KB
Licence
MIT
Declared effects
runs commands
Checked with
Blender 5.2.1, background (Cycles CPU for previews)
Checks
addon install and enable, operator runs with defaults, blender data matches core, addon disable unregisters, script mode runs, clean reopen addon file, clean reopen script file, gltf separate export, engine output clean
Techniques
Quarter-turn stair with three winders at 30 degree increments, Ray and square intersection for winder outlines, Mirroring a mesh with reversed face winding
Tags
blender, procedural, stairs, winder, landing, architecture, mesh generator
Identity
library.supply.creative_originals.f0fc561c43c926142b95a81e.24b181924d9ccd34
Version
24b181924d9ccd349023cb41e3c3e4e30071a98e8d47bf766a7f2ca6c4a122b5

The version is the SHA-256 of the item your harness downloads; every file in it names its own checksum.

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