Holder, cutting tool, and method for manufacturing machined product

A method for manufacturing a machined product, the method comprising:

• rotating a workpiece;
• bringing a cutting tool into contact with the workpiece that is rotating, wherein the cutting tool comprises a cutting tool holder and a cutting insert, and the cutting tool holder comprises:
• a body having a bar shape extending along a center axis from a first end surface to a second end surface, the body comprising a recess extending from the first end surface toward the second end surface;
• a weight located in the recess;
• an elastic member having a ring shape in contact with an inner peripheral surface of the recess;
• and
• a lid press-fitted into the recess from a side of the first end surface, wherein
• the inner peripheral surface of the recess comprises
• a first region located on a side of the first end surface and being in contact with the lid;
• and
• a second region located closer to the second end surface than the first region and being in contact with the elastic member,
• the weight is fixed to the inner peripheral surface by the elastic member and
• a surface roughness of the second region is greater than a surface roughness of the first region;
• and
• separating the cutting tool from the workpiece.