Can I bore my own hinge holes?
You can get specialized cutters for that sort of thing, but you can do it without, all you need is a drill, hammer, and chisel. You drill 4 holes in the corners of the hole you want, at the depth you want, then chisel out the material in between. A workbench would be handy for this but you could do it on floor if you like. 

That is a load of work though, so a cutter would be a better choice. Alternatively buy something like a lay on sprung hinge that requires no inset hole: