It never ceases to amaze me, being a relative newby, how I can learn while saving some money. I needed a longer boring bar than I had to fit into my adjustable boring head for my mill and I could have bought one on line, but I was able to take a large bolt and a broken tap and make one for almost nothing except my time. It took a couple missteps and mistakes to get it right, but I learned a lot. Very gratifying and when done, it worked like a charm. Maybe boring (no pun intended) to most but kind of cool to me. We all have to learn sometime and what better way than on making tools we need to complete tasks while making an engine. I will be able to use this tool on future projects.