Ballscrew or leave alone?

[russell]

As anybody a strong opinion on whether or not to change the standard drive shafts on my cnc converted milling machine to Ballsrews or leave the originals in.

Clearly, yes some people have strong opinions.

Personally I think it depends on what you intend to use the machins for. I am using Delrin anti backlash nuts on my converted Chinese mill but then it is only a toy for learning and occasional use in model engineering. I have 1 thou backlash on both X and Y axes and it gives very little friction at that setting.

If you are going to use the mill every day for production purposes there is no question that ballscrews are necessary.

... just my 2 centimes worth.

Russell.