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Selective Laser Melting

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Selective laser melting (SLM) is an additive manufacturing process with applications across industry.

It begins with the creation of a 3D CAD model, which is numerically sliced into a number of finite layers. For each sliced layer a laser scan path is calculated which defines both the boundary contour and some form of fill sequence, often a raster pattern.

Each layer is then sequentially recreated by melting sections of a bed of powder using a laser beam. After each layer the powder is spread uniformly by a wiper and the process repeats, the melted particles fusing and solidifying to form a component, layer by layer.

Selective Laser Melting

TWI has been developing SLM technology for the last decade. For full details of our capabilities in this area, and to find out more about the process and the benefits it can bring to your business, visit the SLM page on our dedicated additive manufacturing website:

For more information, visit our  additive manufacturing website or email:


contactus@twi.co.uk