The acrobat arms that are used in smoke and dust suction systems are the closest protectors for workers.
The harmful gases occured during processes must be absorbed and correctly filtered before reaching the worker’s respiratory tract. The most important factor during suction is the right positioning of the acrobat arms.
The distance between acrobat arm and the source of the smoke must be as the diameter of hood of the arm. As you can see below example, the acrobat arm must be positioned right across the worker.