Re: [CAD_CAM_EDM_DRO] Re: Grizzly MiniMills&CNC

Hi Dave

Finished stripping the head down on Sunday and once again horrified by the
amount of grit inside the various castings. It took a little while to work
out that the nut at the top of the spindle (used for preloading the bearings)
is a left hand thread !
I got presented with an 1 1/4 ground ballscrew complete with nut - With
around six inches of travel, this would be allmost ideal for the Y axis. At
the moment, I have the base and saddle sitting on the bench, and I'm slowly
measuring up prior to fitting the ballscrews.
Now that I have the the Geckos assembled in their case, wired up and tested,
I can get on with the mill.

One small modification will be to swap the two gears around just underneath
the motor. This should up the spindle speed to 10-12,000 rpm.

Regards, Paul.

On Tuesday 15 January 2002 9:07 pm, dj_lettuce_bee wrote:

> In looking at the date of Paul's last email, I am hoping you (Paul)
> have had time to work on this project some more and possibly detail
> your results? (The more details the better for I am completely new to
> this world, and love what I am finding. ball screw types, stepper
> motor sizes and satisfaction with results in regards to the Z axis -
> and just how you modified your mil to accept the ball screw in the Z-
> axis are ALL very intersting to me)