Wedges are your scoring clubs. It is important to pair the ideal wedge setup with the right grind.
Most people don't need fancy looking grinds (it's very easy to make an aesthetically pleasing, jaw dropping grind but not many will perform the way they should). A player first needs to be careful about getting the right bounce and then determine the shape of grind from his or her style of play. Basically, we need to understand a player's wedge game and style as well as conditions of the course he or she plays play.
With a sharp leading edge, you better be a damn good striker, especially with a low bounce! A beveled leading edge can also create a straighter leading edge look at address position by shaping it to a smaller crescent at certain angles a la Mizuno JPX 800 Pro.
How much curve a player needs is based on his or her attack angle as well as course conditions.
The roll can be curved or flat. The flatter the roll, the more the ball will fly higher on full shots. This of course depends on bounce angle too. The P grind has two bounce angles. A player can pinch the ball for pitch or chip shots with a lower flight (low spinner type shots), but the second bounce will be crazy effective for full shots. A player will pop the ball up with crazy spin, but will have more difficulty with distance control. This requires practice to build some confidence!
Heel and Toe Relief
This depends on a player's skill level in terms of style of wedge play. A player will need this if her or she manipulates the face angle to create shots and distance control.
Trailing Edge Cut
Most skilled players who like to control the trajectory for better distance control will prefer a more aggressive trailing edge cut.
Here are some examples of custom grinds Joe Kwok has completed: