Building a Double Winder Stair: Using modular boxes to stack one tread and riser at a time.

In building this double winder stair, remodeler Dave Holbrook used modular boxes to stack one tread and riser at a tim.

Spiral stair plans. Spiral stairs crafted in wood How To Make A Wooden Spiral Staircase

Spiral stairs crafted in wood How To Make A Wooden Spiral Staircase

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