I just finished assembling these leveling bars, that I made for a Lagun FTV-1 that's on it's way. I too pondered the free standing vs anchor dilemma, as I live in pretty active seismic country. But, after talking to several local pros, and having been in a few local shops. None of them anchor their mills, and no tip overs that I'm aware of. So, it'll be free standing, on vibration pads for me. I bought the feet from H&W, and then made the bars from 1" x 2" solid stock.