Thanks for writing this up! It makes a lot of sense, as in my experiments I found that some of the V channels would hold wire but not others, and come to think of it they probably were only the deepest channels I had cut.

Are you using the same graver for the under cuts? Those seem like they would have to be whisper thin, but then I suppose you are only making very small undercut, not much more than horizontal abrasions a few tenths of a millimeter.

Again, thanks for taking the time to write this up. These sorts of quick tutorials are a really nice place to get started.

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No problem, I hope it helps! I do typically undercut with the same graver, you can usually get it in there fine.

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