Hi Mack, great to see you posting.
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I had the opportunity to try out some of Carl's gravers while visiting him a while back. Simple to maintain and very effective. Very durable in either a push graver (under my "iron thumb"
) or in an Airgraver. FEGA Journal issue #81 is an essential compliment to Carl's set and I hope he does another article in the near future (hint).
Chris