Many people believe that holding a 90 degree spray gun on the working surface will optimize the process of rust removal or decontamination of the workpiece surface.

However, this actually slows down the sandblasting process and makes the media (sand material) wear faster. Your gun, should be 30-45 degrees to the surface of the position you want to process, so that your abrasive with the least wear to achieve the best effect.

Especially when you want to find a suitable effect for yourself, through multiple angle work test, find the balance point you need, make a record, and then create your best spraying surface according to this standard.