Review on 3mirrors ALUMINUM Tungsten Electrode Sharpener Grinder Head - Efficient TIG Welding Tool with Cut-Off Slot, Multi-Angle & Offsets, 4 Copper Screw Holes, 1X CNC Mandrel & 5X 25mm Diamond Wheels by Mark Estrada

Bought because I was tired of sharpening tips by hand. Always gives good and accurate tips. I installed my Milwaukee M12 rotary tool. Set it to 2.5 out of 6 speeds, it does the job just fine. I just leave it there like a special tungsten grinder. I bought this verse with 40 holes so there can only be (1) 3/32 hole - no confusion. Anyone have doubts about buying a tungsten grinder like me? Don't - you will be happy the first time you use it! Update: You can move the 3/32" brass guide to any of the 4 bevels you want. The way it's marked is deceptive.