Inflated steel things, having a go at the Elizabeth Brim method.
Here's an interview with Brim herself, talking about the technique.
A flat envelope of steel sheet is welded up:
Heated in the forge:
And inflated with compressed air. This was abut 1 bar.
Obviously, it can be dangerous to put high-pressure air into a thin red-hot steel container. Especially when it's as badly welded as this one was. Please take all the appropriate precautions
The finished result:
And here's a larger cushion done in the same style. This one wouldn't fit in my tiny forge, so it had to be heated with a torch while the rpessure was applied. The decoration was done with a blunt chisel over a rubber sheet before welding up the envelope.Home | Artefacts| Forgework