| 摘要 |
<p>A vacuum template has a suction chamber on its back surface that adheres the template to the wall or other flat surface when a source of vacuum pressure attached to the template is turned on and the template has been placed by the worker in its desired position. Dust inlets adjacent a guidance hole in the template immediately suction away dust particles as the hole is being cut by a power tool or hand saw manipulated by the user. Interchangeable modules on the template provide for variations in hole size and shape.</p> |
