Grit Blasting and Drag Finishing

At PRES-X, we implement systems specially designed to give AM components a uniform surface finish, particularly in areas where printing supports have been removed or the surface finish is uneven, such as on the upskin and downskin.

Grit blasting

Favored for its simplicity, efficacy and repeatability, grit blasting is used between printing components and their final finishing as it gives them an even surface with cycles times of just a few seconds.
Different abrasives, nozzles and pressures are selected to suit the material, the component’s initial degree of roughness and the desired type of surface finish. The most commonly used abrasive blast media are Corundum and Zirconia.

Drag Finishing

Drag finishing is a surface finishing process that enables 3D-printed products to be honed by the mechanical interaction of abrasive media on the component.
The components are attached to specially designed holders, dipped in a drum containing abrasive particles and spun with a carousel. Every abrasive media has a different size, shape and composition and the appropriate one is selected based on the component’s initial type of finish, the complexity of the surface requiring treatment, and the desired result.
Drag finishing technology is used for finishing tools and components for the Biomedical and Automotive industries.

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