Worry Free: Antipullout toolholders reduce scrap, increase tool life and eliminate anxiety while milling

Posted Leave a commentPosted in Equipment and Tooling, Machining

In the winter of 1918, Carl A. Bergstrom opened the Weldon Tool Co. in Cleveland. Working from his shop atop the Blackstone Building, he developed a new kind of endmill, one with a 30° helical flute. The thing cut like crazy. Yet Bergstrom quickly realized that his toolholder lacked the gripping power to hang onto […]