Method for the manufacture of a cutting tool

A method for manufacturing a cutting tool having a tool holder to which a cutter is separably attached, comprising:

• providing a metal base body having a configuration different than a final cutting tool configuration;
• forming successive layers of metal onto the metal base body, comprising:
• applying a layer of metallic powder on the metal base body;
• melting a portion of the metallic powder in a specified pattern to combine the melted metallic powder with an underlying material;
• repeating the steps of applying and melting a portion of the metallic powder in a specified pattern for each layer to combine the melted metallic powder with the underlying layer, until the successive applied layers form a preliminary shape of the cutting tool;
• wherein one of the successive applied layers is formed to include a melted metallic powder portion forming a solidified lower boundary portion;
• wherein further ones of the successive applied layers are formed over the one of the successive layers in patterns to create a melted metallic powder portion forming a solidified side boundary surrounding a non-solidified metallic powder portion, with:
• the non-solidified metallic powder portion being supported by the solidified lower boundary portion;
• and
• the further ones of the successive applied layers extending a height of the side boundary and quantity of the non-solidified metallic powder portion surrounded by the side boundary
• removing metal from the applied layers to finish the tool holder to the final cutting tool configuration;
• enclosing the side boundary with a solidified upper boundary by melting a portion of the metallic powder of a vet further one of the success applied layers onto the side boundary to create a closed boundary formed by the lower boundary, side boundary and upper boundary, the closed boundary permanently encapsulating within the closed boundary the non-solidified metallic powder portion applied with the further ones of the successive applied layers and surrounded by the side boundary such that the closed boundary is at least partly filled with the non-solidified metallic powder which remains non-solidified upon completion of the cutting tool to act as a dampener.