I have a sea of holes aluminum table. Essential to my work holding efforts. It was looking dinged and nicked after many hours of usage. I decided to resurface it today and discovered to my surprise that it was uneven. I expected some but this is what it looks like after two passes of -0.0025. The top right corner got material taken off by just running the surfacing path at Z0. The extra 0.0050 taken out after two passes had the board looking like this:
The top left corner and the tip of both bottom corners left untouched. It took an additional pass of -0.0025 to have it like this:
It still looks like I could do one extra pass. It feels very smooth but looks funky. All done with a 1/4" flat endmill. Any suggestions to even the look out?. Polishing?.