Gun Drilling Speeds and Feeds: A Practical Reference Table
I have been running gun drills for over a decade, and the single biggest productivity gain I ever made was laminating a reference card and taping it to every machine I run. When the spindle is stopped and chips need clearing, I don’t want to dig through a binder or scroll through a PDF. I want the number, right there. This article is that card, blown up with the context and edge-case notes that never fit on the laminated sheet. ...