Re: [CAD_CAM_EDM_DRO] Re: ground plates

At 04:24 AM 7/10/02 -0000, you wrote:

>Dave,
>
>To get plate that'll end up flat after grinding is a two step process.
>First it needs to be stress relieved by a heat treater, then ground.

Actually, this won't do it. Mag chuck will flatten it, then when it's
released it will spring back some. To get flat, you need to suppport it on
chuck so it isn't stressed in any way.

Regards, Hoyt


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