Re: [CAD_CAM_EDM_DRO] Re: 3D router Rack and Pinion or Ballscrew

dakota8833 wrote:

>
>I had built a router that is using a 6 ft by 3/4 inch acme screw from
>Nook. It has a pitch of .2 and I can run at 2 inch a second with no
>trouble. But I did notice a vibration, which turned out to be side
>play in the nut. Greasing it only helped for a few minutes. I ended up
>making a coller to remove this play. All is well now. Anyone else have
>this happen ?
>
>

Using a 6 foot 3/4" screw is really on the edge of disaster, especially
with the
velocities a router requires! That is way above critical speed in most
cases.
The screw tends to whip around.

Jon