Iscar is introducing an innovative solution to boost productivity in milling nickel-based high temperature superalloys (HTSA) and cast iron with the use of ultra-hard cutting materials: the CERMILL, a new family of relatively small-in-diameter indexable endmills with ceramic round inserts. The key element of the family is an ingenious mechanism of high-rigid insert clamping, which provides two important advantages: Increased number of teeth compared to existing designs of similar endmills in the same diameter. Fast, simple, and user-friendly indexing and replacement of the insert, without the need to remove the endmill from the tool holder.  The higher number of teeth and the extreme rigidity of the clamping mechanism makes the CERMILL an effective tool for boosting productivity in milling operations, particularly, milling planes and 3D surfaces. The indexable mill design concept in the relatively small tool diameter range offers significant cost-effectiveness compared to the prevailing solid designs within this diameter range CERMILL endmills In the initial stage, the CERMILL endmills are currently offered in three different diameters: 16mm, 20mm, and 25mm. The endmill bodies feature a special coating that serves two purposes: enhancing chip flow and providing protection against corrosion and wear. CERMILL inserts The endmills carry indexable single-sided positive round inserts in diameter 6.35mm. The inserts are produced from the following ceramic grades: IS14 and IS15 that are intended for machining HTSA, IS45, which is designed for machining HTSA and cast iron. These inserts are available in various designs depending on the cutting-edge condition.