Vehicle interior component and method of producing the same

A method of producing a vehicle interior component, the method comprising:

• forming a through hole in a board base of the vehicle interior component to extend through the board base in a direction from a first surface of the board base to a second surface of the board base with openings in the first surface of the board base and the second surface of the board base;
• bonding a skin to the first surface of the board base;
• holding a cross head of a composite tool against a section of the skin covering the through hole of the board base, wherein the composite tool including a shaft having an cross section with a contour corresponding to a contour of a mounting hole of a component mounting portion to be formed and the cross head including four blades protruding from an end surface of the shaft;
• moving the composite tool in a direction from the first surface of the board base to the second surface of the board base until the cross head of the composite tool penetrates the section of the skin and the section is divided into the flaps;
• and
• moving the composite tool until the shaft is inserted into the through hole and the flaps are folded along the inner peripheral wall of the through hole toward the opening of the through hole in the second surface of the board base.