Great little kit for polishing the edges of wine bottle drinking glasses the low tech way. After cutting your bottles, add grit and water to the pie pan and flatten the cut edge and bevel the outside edge at the same time. The second step is to add grit and water to the channel of the champagne bottle bottom and bevel the inside of the drinking glass.
1 lb 120/220 Silicon Carbide grit blend
1 steel flat bottom pie pan
1 cut champagne bottle bottom