duncan mackie
Money List Winner
if your taking the rather anal view about by sharpening the grooves could cause a violation of the rules ( i'm not a pro and play for fun) could the very nature of striking a ball alter the actual shape of the grooves and thus making them non-conforming.
yes and no
yes it can change the shape of the groves but no, it won't make them non-conforming as it won't make them wider, sharper or deeper.
it could be argued that constant striking will create a degree of concavity in a forged head, but this would be the result of normal play/use and therefore OK
the current rules on iron groves requires them (for clubs with lofts > 25) to have rounded edges; so, as suggested by some here, any 'grove sharpening' should be carried out with huge care (basically it shouldn't be done!). Whilst it's possible to flatten off the face after sharpening you would need a very specialised tool, dedicated to the particular groves you have, to create the correct roll on the edges.