Making Tools Is More Fun Than Buying Them

While in college, I had better access to a welder than disposable income. This fact surfaced when I needed a 17mm hex tool to remove and replace the drain and fill plugs in my transmission. Instead of buying a 17mm hex socket, I made this:

It's a short 17mm M10 bolt that I welded to a 17mm nut. It's simple and easy to use.