Re: [CAD_CAM_EDM_DRO] Re: Vacuum Table

>No extra bracing will be required for a vacuum table [over a
>non-vacuum] as there is no 'atmoshereic pressure difference' between
>the two. As was mentioned the pressure is applied both to the top
>and bottom of the surface so no 'net change' occurs. The beauty of a
>vacuum is the immense pressure which can be obtained WITHOUT have to
>build the table extra heavy.

Correct until the work deflects. Once that happens, the table must
be able to support the loading of the atmosphere (about 15 PSI) or
the part will be distorted when the vacuum is released.


David G. LeVine
Nashua, NH 03060


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