Soda Blasting is performed with specialized blasting equipment which carefully regulates the special Bi-Carbonate of Soda (also known as baking soda) crystals which are shot dry.
The impact of the crystals causes it to explode which lifts the paint gently off the substrate. As it will dissolve in any liquid it will not hurt bearings, sealing surfaces or gears. Although it removes loose top surface rust it will not take off deep rust staining. The surface is left smooth and warp free.
This process is great for all metals and areas that can't have blast profile. Examples of this would be Hydraulic Cylinders, Seal Surfaces, Threads, Bearings, Aircraft Pieces, etc.