Soda is a relatively new type of blasting media. Aggressive media types, such as sand and glass, are strong enough to remove paint and rust, but will damage chrome and scratch glass. By contrast, soda is just as effective at removing paint, but does not damage chrome or glass. The disadvantage of using soda is that it is not an effective rust remover and is more expensive than the other media types. Fortunately, a substantial savings can be realised by blasting with soda yourself rather than hiring a professional and media blasters that accommodate soda are fairly inexpensive.
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Things you need
- Media blaster
- Air compressor
- Soda blaster's specification's manual
Fill the media blaster's tank with bicarbonate soda specifically designed for media blasting. Contrary to popular belief, the soda used for media blasting is not the same soda used for cooking.
Tighten the tank lid securely to prevent air leaks.
Turn the air compressor on and allow it to fill with air.
Adjust the pressure output valve on the air compressor to the appropriate setting. Consult the soda blaster's specification's manual to determine how much air pressure the blaster can safety contain. Adjust the pressure output valve up to or just below the blaster's air pressure rating.
Open the air inlet valve on the media blaster slowly and allow the blaster's tank to fill with air.
Open the blaster's air output valve slowly. The output valve is located between the blaster and the blaster's abrasive hose.
Point the blaster's air output hose in a safe direction and depress the hose handle to allow air to flow out of the hose.
Open the blaster's media discharge valve slowly while allowing air to flow out of the output hose. As the valve is turned, soda will start to exit the output hose. When the output hose handle is actuated, a combination of air and soda will now flow out of the hose.
Point the blaster's output hose nozzle approximately 10 inches away from the surface to be blasted and at a slight angle.
Depress the output hose handle to begin blasting. If working with a metal surface, move the flow of media steady across the surface to avoid warping the metal from excessive heat. If removing material from a large surface, note that the air pressure within the blaster's tank will decrease. It may be necessary to pause every few minutes to allow the air compressor to refill the blaster's tank with air.
Turn the air compressor and the compressor's air output valve off.
Close the blaster's media discharge valve.
Depress the blaster's output hose handle to release the air pressure from within the blaster's tank.
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