High-pressure water is a powerful tool in preparing surfaces for painting or finishing. But what determines the most efficient way to strip off old material and make way for new? Our team looked at how variables such as standoff distance, traverse speed, surface speed, rotation speed, and head design affect surface preparation when using waterblasting tools at 20,000 to 40,000 psi.A range of equipmentThe most common materials removed in surface preparation are coatings, oxidation and scale. A wide variety of equipment is available for waterjet surface preparation, but most such equipment now includes rotating nozzle heads. Handheld rotating guns are
