I just cleaned up the ways on my 10" Atlas lathe and put a 4 foot level across both of them length wise and they are both still flat (considering the abuse & neglect) this machine has been through since it was built). All the other components came out of my electrolysis tank looking good; still having some paint n them & teh ways as well; I just need to get after everything when I have time to get things cleaned up with scotchbrite pads & wire wheels & brushes.