sand blasting

Technique for deburring after machining and giving a matt finish.

Sand blasting is used to erase the machining defects (preparatory technical) but also, and especially, as a finishing technique to achieve look "matt".

Sand blasting is exerted using a machine (sand blasting cabinet) which is sprayed onto the parts different abrasive materials (bronze powder, glass beads or another ones) with a more or less high pressure. Depending on the abrasive and pressure, are obtained different colors and effects.

 

Source: www.cpih.ch/fr/m6/Doc_a_tel/fichiers/BrochurePolisseur08.pdf