A number of years back (1997 or 1998 I think) I received a call from Corey Pavin. He was concerned with the grooves on his irons because he claimed he was hitting more fliers than he normally did. He also said he could not predict when it was going to happen, since a number of what he felt were normal fairway shots ended up as fliers. Corey sent his irons into me and the first step was to check out the grooves.
No player could play consistently well with the faces Corey once had.
Here is what I found: The groove type was a “V” groove but it was very shallow. The maximum groove depth allowed by the USGA is .020” and the maximum groove width is .035.” Corey’s irons had groove depths that ranged from .005” to .007” deep.
In 1982 The GolfWorks was 6 years old and we were setting up distributors around the world. A new distributor we had just put on was Diamond Golf located in England. Diamond Golf covered the British Isles and much of Europe and Spain. They sold our clubheads, tools, books, some shafts and grips and other general supplies. Some of the products we carried were also available in their market so they were sourced by them.
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