If you are newer to engraving like me and you’ve created a bunch of tools at class it can be helpful to mark them for identification. As you get more experienced you will be able to look at the gravers and know which is which but I personally am not there yet. In class this week @jakemartinmetalsmith was scratching the numbers into the collette with a scribe and I thought that was great and just took it a step further with the ball but once I got home! I hope this is helpful! Also “TD” stands for @todddanielsdesigns as this is a special flat tool we created during his class. @grstools #engraving #engravingtools #grsfamily