If you do plan on sandblasting glass, you will obviously need an air compressor. The photo on the left shows an example of the 2 compressors in my garage (a 1 stage & larger 2 stage). The selection of an air compressor can sometimes get confusing because of various ratings and types available. The specifications to look at when buying an air compressor are the “CFM” rating, maximum air pressure output, air tank size, and the horsepower of the engine.
The horsepower of the engine will usually go hand and hand with the amount of air power the compressor generates. In addition to this, you can also consider the type of air compressor such as an electric or gas powered engine and a single or two stage compressor. Usually a single stage compressor will work for a pressure pot. My rule of thumb is to buy an air compressor based on the requirements given from the manufacturer at least or better. Sometimes when I am blasting smaller items, I can easily get away from the minimum requirements, but if you’re doing this a lot or work often then you should follow the air requirements.
Listed below are the air/sand supply requirements for the Central Pneumatic pressure pot from Harbor Freight. The requirements are from this particular manufacturer, but they should be fairly similar to other brands.
|Hose ID||Nozzle ID||Compressor HP||CFM@ 125 PSI||Sand Use per Hour|
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