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How often can I use matrix brass off mask? 

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As a result, the coated brass with copper content of 60-70% is effective and the thickness of coated brass is needed to be more than 1.45μm for high removal rate.
Conversely, when adding an amount less than 4.5%, brass particles are generally all removed from the matrix implying a higher source flow of third-body wear.
The results obtained from the wear tests show that the burnishing process can be used to improve the wear resistance of the brass components considered.
Mask fabrication by micromilling is fast and, therefore, less costly than conventional mask fabrication processes.
Benefiting from the sparse property of the mask patterns, the mask manufacturability can also be improved compared to traditional methods.
Therefore, the mask design is as important as the filtration efficiency of the mask material.

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