Through attempts to lower the center of gravity of the club head, it evolved into a shorter, thicker head slightly curved from front to rear (the so-called "hot dog" putter ).
#Ping fetch putter trial
Previously club design had been based largely on trial and error. In 1959 instead of attaching the shaft at the heel of the blade, Solheim attached it in the center, transferring much of the weight of the club head to the perimeter. One of the first to apply scientific principles to golf club design was engineer Karsten Solheim. Putters were originally a forged iron piece very similar in shape to the irons of the day. The design of the putter's club head has undergone radical changes since the late 1950s. In the 1900s putters heads evolved, with iron club heads becoming a more popular design. Historically putters were known as "putting cleeks" and were made entirely from woods such as beech, ash and hazel. Many putters also have an offset hosel, which places the shaft of the club in line with the center of the ball at impact, again to improve stability and feel as, combined with the vertical bend, the shaft will point directly into the center of the ball at impact. This increases accuracy as the golfer can direct their swing through the ball, without feeling like they are slightly behind it. The putter is also the only club allowed to have a bent shaft often, club-makers will attach the shaft to the club-head on the near edge for visibility, but to increase stability, the shaft is bent near the clubhead mounting so that its lie and the resulting clubhead position places the line of the straight part of the shaft at the sweet spot of the subhead, where the ball should be for the best putt. The putter is the only club that may have a grip that is not perfectly round "shield"-like cross-sections with a flat top and curved underside are most common. This loft is typically 5–6°, and by strict rules cannot be more than 10°. The striking face of a putter is usually not perpendicular to the ground: putters have a small amount of loft, intended to "lift" the ball out of any depression it has made or settled into on the green, which reduces bouncing. The putter must be designed to give the golfer every technical advantage including smooth stroke, good glide, sweet impact, and bounce-less topspin ball launch as well as every technique advantage including perfect fit as to shaft angle and length. Putting is the most precise aspect of the game of golf. Stacy Lewis putting at the 2010 British Open
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