I’m not that fancy, I jut drilled as deep as I was comfortable and tapped it. It was a “maybe we’ll have an issue, maybe we won’t” kind of project. So far, we haven’t had an issueDid you finish by using a bottoming tap or grind the end of a standard tap to cut the threads deep enough without hitting the bottom of the vein?
@Broski it looks like your second line is tapped through the top of the box as well. I think this is my plan.