Stop in for a cup of coffee

Much over 1/8 not usually an issue unless it grabs, or you get angled. The harder a bit is the better it holds an edge, but also the easier it is to break. Get down to like a 32nd and breath wrong its done. LOL
I don't fee as dumb then. I was going thru two sheets of 18 gauge. Making the holes for the Cleckos on my darts floor pans