I was changing out a 12" miter saw blade that had lived a decent life but needed retirement, and wondered how it might be re-purposed. I came up with the idea of making a Lazy Susan turntable for the grill that could double as a weapon if the zombie apocalypse happened to drop at the same time you happened to be fixing up some burgers. I call it the Lazy Sawsan, pun intended.
12" used miter/table saw blade
Lazy Susan ring (about 4 bucks at Home Depot)
Scrap plate aluminum
Angle grinder with metal cut off wheel, grinding wheel and buffing wheel
Drill (preferably drill press)
Welder (or optionally epoxy would probably work fine)