Related to my yesterday's vise refurbishing project, where I milled a little thin layer off the anvil to make it look smooth. I used a 5/8" carbide endmill. I made multiple passes, each time removing a "strip" approximately 1/2" wide.
While the result is perfectly acceptable for a vise anvil, it was nothing to brag about as far as finish quality is concerned.
Here's one revealing picture:The ridges you see, are visually exaggerated by the fact that some passes fere from left to right and some were from right to left. They look bigger than they are because of this. In reality they are not really that high.
So. What would you do, to achieve a decent looking flat finish, without a surface grinder or anything of the sort.