If individual parts are no longer available, then they can be recreated by means of reverse engineering – frequently via additive manufacturing. Owing to its rapid nature and high precision, additive manufacturing is becoming more and more important. For this purpose, components with complex shapes are captured using 3D scanning, which converts the data into a CAD model and sends it directly to the 3D printer.
Optical measurement technologies for 3D scanning and thus 3D digitalization require light to be reflected off the part surface. For transparent surfaces it is clear that the light will go through the surface and the scanner won’t ‘see’ anything. Spraying the object before the scanning process ensures a clean and matte surface, which not only improves the scan quality, but also enables the scan for transparent products in the first place.
The latest scanning sprays form a fine, homogeneous layer on the surface of the workpiece. The layer is touch-dry and also allows reference points to be applied. A further advantage is that these scanning sprays sublimate automatically, which means no cleaning of the parts or of the scanning environment is required. AESUB, a supplier of scanning sprays, state their products free from pigments that are harmful to health and do not contain titanium dioxide.
For more information: www.aesub.com