Re: [CAD_CAM_EDM_DRO] X axis yaw on CNCd G8689

On 4/12/2011 11:56 PM, Chuck Merja wrote:

>
> Sorry for the repost - didn't get any bites last week.
> I thought I'd start a new topic for this (as opposed to continuing the
> tool
> size > hole dia). I have a G8689 converted to CNC and it still has ACME
> screws. In cutting the holes using the CNC, I get holes that aren't too
> round. PArt of the problem is that I need to better characterize the
> backlash in MACH, but I also noticed that I have some significant yaw
> issues
> with the X axis - except at the end points of travel, where the ways
> tighten
> up so much that the steppers miss steps. So, it looks like I need to
> rework
> the ways on this mini mill - any suggestions???? I have a pretty good
> Bridgeport that I could toss this little table on and try to
> straighten the
> ways, or is this a dumb idea? thanks, C
>

That is what I would do.

--


Ron Thompson
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