Any surface treatment will have 3 significant gears in carrying out properly be it to fulfill cosmetically or functionally.
First Gear, we need to select a proper chemistry MATERIAL Involved to suit the substrate and efficient required
Second Gear, we have to proper method MEDIA, be it the specific spray nozzles, the abrasive media, the mechanical factors involved temperature, retention timing, proper agitation.
Third Gear, we have to rely upon proper MACHINE or equipment to handle the substrate as well the material and media.
All 3 gears has to go hand in hand to get the desired treatment for both in manufacturing and supporting facilities.