Link (Thanks, Bonnie!)
The main body is made from a plastic Dalek bubble-bath bottle I bought very cheaply at Woolworth's in the post-Christmas sales. At the time I had no idea what I could use it for, but it looked too cool to pass up. I disassembled it and spray-painted the parts with a can of gold Plastikote paint after masking off the two silver arms on the front. The wheels, cylinders, chimney stack, and 'bumpers' came from a rather tacky brass model of Stephenson's Rocket I bought for £5 at a car boot sale. The brass brush on the end of the gun is the head of a rotary wire brush attachment that came with a mini-drill set. The pressure gauge, dome, whistle, safety valve, water level gauge, and valve are all bits and pieces I had lying around the workshop (I used to be into model engineering). All the brass parts were painstakingly cleaned and polished with Scotchbrite, Autosol, and Brasso. It is held together with a combination of screws, hot melt glue, and cyanoacrylate glue. I left the plastic bottle inside the body because the neck acts as the turret bearing - I haven't opened it so it must still be full of bubble-bath!
*STEAMPUNK! STEAMPUNK! STEAMPUNK! Isn't that the most lovely word you've ever heard? I just want to say it all day long! STEAAAAAAAAAAMPUNK!
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.