Description of Amana Tool AMS 148 Carving Collection
1/4 Inch Shank. Benefits of Zirconium Nitride (ZrN) Coating: Creates a harder and tougher cutting edge allows for a prolonged cutting edge life and helps to prevent the build-up of material in the flutes while cutting Have the tendency to run/spin much faster than an uncoated tool Optimized flute geometry and low Total Indicated Runout (TIR) guarantees clean cuts, essentially eliminates sanding and reduces chatter (where the machine or work piece vibrates) under high chip loads (when used with low TIR spindle.
I bought these specifically for cutting Corian on my CNC machine. I have used 3 different bits and they work very well. Very smoothly embossed carving. Amana also has a full spec sheet that helped me set up my car. I would recommend them to anyone doing relief carving.