SonofSnowman
Member
This discussion of groove technology is way beyond my pay grade, but, for what it's worth, Tom Wishon does seem to claim in this article (and the comments section) that grooves and milling help to some degree to impart spin.
http://wishongolf.com/wedge-backspin-create-backspin-with-a-micro-groove-wedge/
http://wishongolf.com/wedge-backspin-create-backspin-with-a-micro-groove-wedge/