Benjamin Stark explains how to make a Bowie knife. You'll need some AEB-L stainless steel, a bandsaw with metal cutting blades, a grinder with lots of rough belts, a drill, material for the handle, epoxy, clamps and finishing compounds.
A little background on myself: I'm 17 and have been making knives for about a year and a half. I learned how to make them simply by watching a lot of youtube videos and finding tutorials online. I started with under $300 worth of tools and made and sold a few knives to be able to afford the more expensive equipment. The knives don't turn out quite as nicely with such minimal tools but you would be able to make a fully functional knife if you are resourceful.
When a customer told me he wanted a bowie knife, I thought it would be a perfect opportunity to show the process behind making one.
