To use the sandblaster, insert the induction probe into the sand and attach the sand blaster head on your pressure washer wand. Next, open your water supply. Then, before turning the pressure washer on, trigger the gun. Triggering the gun will release any air before you start the pressure washer. Once you start the pressure washer, triggering the gun will start the process delivering sand along with pressurized water to your object. Always start spraying a few feet away and move in closer as you scrutinize the job. Sandblasters are spraying abrasive particles at very high speeds against a surface. You must remember that sandblasting can cause a lot of damage in a few short seconds!
Sandblasters use water and sand (media) to obtain a smooth, clean surface. There are 3 different materials used for media; baking soda, dry silica sand, or washed and dried river sand. The “mesh” is the way the media is measured. Mesh is what size sieve any certain grade of sand will pass through. It is recorded in two numbers, the first being the size most of the grains will pass through, and the second is the size only a few grains will make it through. Common mesh grades are 16/50, 20/40, 40/60, and 10/35.
It is very important to keep the sand dry through out the process. Wet sand will clog the hose / nozzle. If the sand gets wet, you must remove the probe and allow the hose to dry before continuing. It is a good idea to cover the sand container to prevent over spray from wetting the sand.
Sandblasters can be used in many cleaning applications. It can remove paint from wood or metal, remove rust, smooth surfaces for repainting, and can clean grease and graffiti quickly and with ease.
When first starting out, experiment with the different results you get with different media, different angles, and different distances. The angle affects the nozzle distance and there are charts and information about this that is available through your supplier. Once you get going, you will be able to easily judge things like adjusting your sand intake and choosing the best media. One last thing that is stressed with all sandblasting applications is the importance of protective gear. Eye protection is necessary…and complete coverage of your body is highly recommended!
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