Description
The position of the material blast hose in relation to your body can be very important to efficiency, comfort, and safety. There is a considerable amount of back pressure from the blast hose when using 6-Bar air pressure.
For ground blasting, hold the blast hose against your body using your body weight to absorb the force of air pressure. This can be done by placing the hose in front of your body or over your shoulder. In some cases, it may be necessary to have an additional worker behind you to help move and control the hose.
For high-pressure abrasive blasting (6 Bar or more), it is recommended that the nozzle be positioned 90° to the work surface. This allows the abrasive to impact the surface and to produce a clean anchor pattern (profile). The surface profile resembles a mountain range under magnification with many peaks and valleys.
When blasting small parts, it helps to work on a table that is a little lower than waist high. Place the item to be cleaned in the middle of the table and start by blasting the area that is facing you. When that surface area is done, move the part (usually a quarter turn) to expose a new surface area. Repeat this operation until all surfaces are cleaned. Most three-dimensional parts will require at least eight moves to complete. This also helps reduce back fatigue.
Instead of trying to pour material from a 22- or 36- KG bag of abrasive into the blast pot, pour the media into a 20 Litre bucket, which is easier to handle.