I just joined Lumberjocks and am looking forward to the network. Question: I'm trying to bore 3 1/2 inch diameter holes in 6 to 10 inch thick log slabs to hold wine bottles, and was wondering if any of you out there have any ideas on the best way to go about doing that? I've tried using a hole saw with mixed results (plus, this process is slow, labor intensive, and a little on the hair-raising side), and am considering using a self-feed drill bit of that diameter. If any of you have ideas/suggestions, they would be appreciated.