| 摘要 |
PROBLEM TO BE SOLVED: To provide a working box while being applicable for cleaning. SOLUTION: A working box for craftsmen with a working chamber 1 for working a dental prosthesis is provided with a first suction port 21 which is disposed in the working chamber 1 to suck dust generated during the working chamber, a second suction port connectable to a hose of a vacuum cleaner, a vacuum connection pipe connected to a suction port of a suction device and a selector valve to connect the vacuum connection pipe being switched to the first suction port 21 or the second suction port 22. An exhaust from the suction device is discharged through an exhaust pipe 29 while a part of the exhaust from the exhaust pipe 29 is introduced into the working chamber 1 with an air feed nozzle 27.
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