Quote Originally Posted by Robin Hewitt View Post
You did 0.2mm OMG that is insane. I did play with sinking a 0.5mm rib cutter in to aluminium. I couldn't get any kind of finish at the bottom but I was thinking I had done well. Right up to the moment when I saw you had done 0.2mm. Ballpoint for scale
Hi Robin - yeah, but the 0.2 was in mother of pearl... The smallest I've tried in aluminum is 0.4 - pics below. Slow going but the quality seems to hold up alright.

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Oops, probably heading a bit off topic...

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