Golf club heads and methods to manufacture golf club heads

A golf club head comprising:

• a body portion comprising a toe portion, a heel portion, a front portion, a rear portion, a top portion, a sole portion, and an interior cavity;
• a first opening at the sole portion;
• a face portion located at the front portion, the face portion comprising:
• a front surface;
• a rear surface opposite the front surface;
• a plurality of grooves on the front surface, the plurality of grooves comprising a first plurality of grooves intersecting with a second plurality of grooves to define a plurality of projections on the front surface, a groove of the plurality of grooves having a variable width that decreases at a first rate from an upper width to an intermediate width and decreases at a second rate from the intermediate width to a lower width at a base of the groove of the plurality of grooves;
• at least one cavity wall comprising a thickness less than or equal to 0.060 inch (1.524 mm);
• a sole plate coupled to the sole portion to close the first opening, the sole plate comprising:
• an outer surface;
• an inner surface;
• at least one depression in the outer surface;
• two or more openings in the at least one depression, the two or more openings interfacing with the interior cavity;
• at least one cover portion coupled to the at least one depression to close the at least one opening;
• and
• a filler material disposed inside the interior cavity, the filler material contacting the rear surface, the at least one cavity wall, and the inner surface of the sole plate.

A golf club head comprising:

• a body portion comprising a toe portion, a heel portion, a front portion, a rear portion, a top portion, a sole portion, and an interior cavity;
• a first opening at the sole portion;
• a face portion located at the front portion, the face portion comprising:
• a front surface;
• a rear surface opposite the front surface;
• a plurality of grooves on the front surface, the plurality of grooves comprising a first plurality of grooves intersecting with a second plurality of grooves to define a plurality of projections on the front surface, a groove of the plurality of grooves having a variable width that decreases at a first rate from an upper width to an intermediate width and decreases at a second rate from the intermediate width to a lower width at a base of the groove of the plurality of grooves;
• at least one cavity wall comprising a thickness less than or equal to 0.060 inch (1.524 mm);
• a sole plate coupled to the sole portion to close the first opening, the sole plate comprising:
• an outer surface;
• an inner surface;
• at least one depression in the outer surface;
• at least one opening in the at least one depression, the at least one opening interfacing with the interior cavity;
• at least one cover portion coupled to the at least one depression to close the at least one opening;
• and
• a filler material disposed inside the interior cavity, the filler material contacting the rear surface, the at least one cavity wall, and the inner surface of the sole plate,
• wherein the face portion further comprises a first thickness and a second thickness, wherein the first thickness is less than or equal to 0.055 inch (1.397 mm) and is measured between the rear surface and a peak surface of a projection of the plurality of projections, and wherein the second thickness is less than 0.045 inch (1.143 mm) and is measured between the rear surface and a base of a groove of the plurality of grooves.