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When choosing a blast compressor for sandblasting, consider air discharge volume, lubrication type, horsepower, portability, and power source. The compressor’s SCFM must match the sandblaster’s specifications. Oil lubricated compressors are recommended for longer life, and at least 2 horsepower is recommended. Portability is important for traveling to job sites, and the power source should match the indoor/outdoor location.
Choosing the best blast compressor requires consideration of air discharge volume, lubrication type, and horsepower. You should also determine if you want portability, such as moving it to and from a workplace. Additionally, the power source is also a consideration, depending on whether you are using the machine indoors or out.
A sandblaster requires a large mass of compressed air to force the sandblasting medium, such as glass beads, out of the machine and onto a targeted surface. The air delivery volume, called Standard Cubic Feet per Minute (SCFM), of the blast compressor must match the specifications of the sandblaster. Most experts agree that you should determine your sandblaster’s SCFM needs by reading the specs from your owner’s manual and multiplying that value by 1.5; the resulting value should be the minimum SCFM generated by a corresponding blast compressor.
The air compressors are available in both oil and oil-free versions. Sandblasters require a lot of power for normal operation; you should look for an oil lubricated blast compressor for the best results. Oiled machines have a longer life than oil-free types because the internal parts stay cooler and are subject to less friction. Constant use of high power for blasting operations would quickly damage an oil-free compressor.
While not as imperative as the SCFM, engine power also needs to be examined; A blasting compressor that offers at least 2 or more horsepower is usually recommended. More horsepower inside the motor allows the compressor to deliver the power needed by the sandblaster without much stress on internal moving parts, such as pistons. As a result, the increased power will extend the life of the compressor for long-term use.
Many sandblasting jobs require you to travel to a job site, such as treating a wall in a residential home. In these cases, portability must be part of the compressor features. You should look for a model of compressor with wheels; this feature will allow you to easily move the machine from a vehicle to the job site. A sturdy handle should accompany the compressor as well for safe handling.
Each sandblasting job is unique; some involve interior work, like painting a vehicle, while others are exterior projects, like the wall of a building. Working indoors requires a blast compressor with an electrical power source. Conversely, a gas-powered compressor should only be used outdoors; the fumes emitted are toxic and harmful indoors.
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