b'Tools that can reach a longer length and still keepchatter and vibration down are constantly evolving as the years go by.cutting aluminum. Walther said endinitely need that because youre ap- tool geometry to suit a specific users performing high-efficiencyplying a lot of forces on that tool byapplication, the company bases machining, which generally involvesmachining aluminum. thechangeonthehorsepower running at high feed rates and tak- WhenLMTOnsrudchangesand torque curve of a customers ing deeper DOCs (step-downs) and a shallow WOC, are gravitating to-ward tools with four to seven flutesor more.It depends on what the custom-ers style of machining is, she said.RobbJack also sees that trend.We have special five-flute toolsAdaptive Grinding Solutionsthat are going to be standard now that people can use to machine at thousands of inches per minute and max out their machines doing high- Solutions adaptedefficiency machining, MacArthur said. to the unpredictableNonetheless, pushing a machine to its limits doesnt mean stressing it and shortening its life.Wearejustmakingsurewe are utilizing all the rpm and all the horsepower that the machine has, MacArthur said. We have tools that reduce the amount of horsepower thats consumed so you can remove more cubic inches per minute with the same amount of horsepower.Slick SurfacesRegardless of flute count, flutes should be highly polished to help clear chips and avoid re-cutting them.You want the substrate to be as slick as you can get it so nothing ad-heres to the cutting edge, Parker said, adding that LMT Onsrud pol-ishes flutes before and after depos-iting a coating.He noted that the more flutes a tool has, the higher the helix angle is, which reduces the pull on a part. In addition, the more flutes a tool has, the larger the core is. strausakglobal.comThe heavier the core your tool has is crucial, Parker said. You def-ctemag.com/cteguide.com33Aluminum.indd 33 6/15/20 6:07 PM'