Anyone here tried DIY Rolex lug re-finishing?

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Is this a completely foolhardy undertaking, or worth a shot? If the latter, can you share what you did? Thanks.

 
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Overlaying the 2 photos to compare, it doesn't look like there's loss of material. Probably the case has been laser welded before redoing the profiles, polishing and giving that angled brushed finish. A laser welder is definitely not something a DIYer would have.
 
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I should have been more clear: referring to re-applying the brush finish. Curious if anyone has tried this by hand, what the technique was, and what grit was used.