Combicaster

The Combicaster by Construx Precast is a modular stair mould system specifically designed for the top-down casting of winding (turning) stairs. With its dual-profile panel design and flexible configuration, the Combicaster offers a cost-effective and space-efficient solution for producing straight, left-turning, or right-turning staircases, all within a single mould system.

Dual-use panel design for maximum flexibility

Each panel in the Combicaster system is engineered for bi-directional use:

• Side A: Features a straight timber profile to which 18mm plywood strips can be nailed, ideal for traditional step geometry.
• Side B: Features a steel cut-back profile, designed for use with magnetic triangular chamfers—perfect for producing cut-back or nosed steps.

This allows the same panel to be used for a wide range of step types, stair turns, and design variations.

Adjustable tread depth

• Goings adjustable between 155mm–195mm or 160mm–200mm
• Magnetic chamfers accommodate cut-back steps up to a maximum overlap of 40mm

System configuration & setup

Panels are:

• Stacked vertically
• Clamped and propped using included accessories
• Spaced wide enough to provide safe working areas on both sides