I picked up a stump so I could put my anvil on but I had to flatten the top and bottom so everything would sit flat. Here’s how I did it.
I shimmed the bottom so it would sit relatively flat (it already was pretty decent). Then I sat my router sled at the top on four 2×4 legs that held it level.
Back and forth passes and it’s flat. I flipped it over and repeated the process.
