Aluminium extrusions are the backbone of countless industrial, commercial, and DIY projects — from lightweight framing systems to high-strength machine enclosures. Whether you’re looking for a 40×40 profile for a custom rig or exploring modular solutions using T-slot technology, extruded aluminium offers unmatched versatility, strength, and ease of use. In this guide, we’ll break down the different types of aluminium profiles, their applications, and why T-slot systems have become the go-to choice for engineers, fabricators, and makers across Australia.
This is a collection of information and resources to help you find out what you need to know about using T-Slot extrusions.

The beauty of aluminium extrusions lies in their clean design and modularity. For example, the 40×40 aluminium profile is widely used in everything from machine guarding to warehouse racking.
These modular framing systems allow for rapid assembly, easy reconfiguration, and precise customization without welding or fabrication shops.
GAP Engineering offers a range of industrial aluminium profiles, from basic solid bars to complex T-slot extrusions, ideal for creating frames, enclosures, conveyors, and more.






















