Quote Originally Posted by Jim Dawson View Post
I would say you would need a microscope to see the difference. The lead screws on my machine are 40mm and 25mm pitch and it is perfectly capable of making very smooth finishes.
Thank you. That answers my question.

With what you said plus the tip from Ger21 on using a gear reduction (if needed), I feel better about the deal on some 20mm pitch ground ball screws that has been made available to me.

It's all coming together. I kinda wish I could pass some of this info back to myself at the beginning of the process. It seems like the largest potential cost in a diy build is changing your mind on the design and having to buy the same parts twice... I'll literally have enough parts for a second build when the first is finished....