I watched a Polish guy making one from a piece of railway track a couple of years ago, and he made a really nice job of it, but a lot of work and as has been said, a lot of consumables, and where do you get a bit of track? I seem to recall small bits of track being sold on ebay. Ive no desires to be forgeing anything but it is very handy to have somthing solid to hammer on rather than being tempted to hit the little anvil pad on my vice with anything heavy, so Ive stuck with my old lump of RSJ that someone flame cut the web back but sawed the top so its square at both ends and that lays on the shed floor by the door and its a useful thing to have, if you haven't got an anvil the lump of RSJ is cheap and cheerful,,,and portable!