...after a long time, I've made a grinding rig but something went wrong

[olderdan]

Hi Claudio
You my get there if you provide a depth of cut adjustment for .1 mm passes, this type of grinding needs rapid passes with small cuts, very time consuming but I dont think that will bother you too much. Dry grinding generates a lot of heat very quickly and the wheel will expand as well as the metal. Angle grinding wheels are too hard for this kind of work. Maybe a belt grinding set up would work but still needing some fine adjustment. Good luck with it and thanks for the enjoyable video top marks for enthusiasm.