Irons
“Irons” are so-called because their club heads are made of metal. Of course, "woods" are now also made of metal, but that's a relatively recent development. Irons have featured metal club heads (steel, these days) for centuries, irons feature thin club heads and grooved faces. Accomplished players might choose a "muscle back" or "blade" style of iron, whereas beginners and most recreational players will want a "cavity back" style head.
The difference is that a blade-style features a full back on the rear of the club head, whereas a cavity back is exactly that and the rear of the club head is, to a certain degree, hollowed out. Thus creating an effect known as "perimeter weighting“ which is helpful to less-accomplished players. A typical, off-the-shelf set of irons will include a 3-iron through pitching wedge, 9 clubs total the clubs identified by a number (or "PW/SW") on the sole of each club.
Each club has a little less loft than the next and a little longer shaft length than the next, so each club shoots a little farther than the next. Also, a 3-iron is a little longer than a 4-iron, which is a little longer than a 5-iron, and so on the yardage gap between irons generally being 10-15 yards.As you move through the set to the shorter, more lofted clubs, the resulting shots will have a higher trajectory, shots will rise at a steeper angle and fall at a steeper angle.
Irons are generally categorized as long irons, mid-irons and short irons long irons are the 1-, 2-, 3- and 4-irons; mid-irons, the 5-, 6- and 7-irons; short irons, the 8- and 9-irons pitching and sand wedge. For most amateurs more lofts helps get the ball airborne and adds a little more control to the shot.Irons can be played from the teeing ground using a tee and it is often appropriate to do so as for example, on a par 3 hole or you might use an iron off any (or even every) tee in order to have better control over the shot. Most of your iron shots will come from the fairway as irons are designed with divots in mind that's why they have a leading edge that is somewhat sharply rounded. That is because iron shots are played with the ball positioned so that it is struck on the downswing that is.
Once again your certified professional Club maker will advise on what is called set makeups depending on the type of golf course you are playing. Also remember that not all Golf Professional Players can offer advice on club making as club makers are more than often engineering apprentice trained over many years. A professional golf player is more likely to help you with a swing fault rather than removing components from your club and replacing them correctly. A professional golfer earns his money from playing in tournaments or based at Golf courses where he gives golf lessons, something entirely different from making, repairing and fitting golf clubs and equipment.
A certified golf professional club maker is one that has been tested by a professional society and has passed the necessary certification exams. You should always check this point before giving any such club fitter the job of dismantling or repairing your prize set of clubs. Some of those clubs are just not replaceable.
Enjoy your golf.