Steam, Glorious Steam!

I've had a good few discussions lately about domestic oven steaming, notably with DanAyo and Doc.Dough.
I've tried various in-oven solutions over the last year or two with good, but not great results. It was also getting to the point where it was taking longer to set the oven up than it was to do the actual baking!
I became convinced that the best way forward was to generate steam externally and introduce it into the oven. This blog post gives some details of the practicalities of how I achieved this.