03-07-2007, 01:04 PM
Spyros,
"Stretching the bronze" would be the exact effect you would get if the bronze was spun directly onto the shield face.
However, the big problem in the modern world seems to be getting bronze at the required "thinness". Craig Sitch of Manning Imperial tried hunting down commercially available bronze all over the planet but the sheets are:
1) the right thickness for spinning but not large enough to cover the shield face or
2) they are large enough to cover the shield face but far too thick to spin effectively
In the end he used sheet brass.
Some info on metal spinning
http://en.wikipedia.org/wiki/Metal_spinning
http://www.metalspinningworkshop.com/MovieClipTwo.html ( A nice pilos helmet could be made this way)
Imagine a shield shape in this diagram as the spun part form/mandrell
http://www.engineersedge.com/manufactur ... -metal.htm
"Stretching the bronze" would be the exact effect you would get if the bronze was spun directly onto the shield face.
However, the big problem in the modern world seems to be getting bronze at the required "thinness". Craig Sitch of Manning Imperial tried hunting down commercially available bronze all over the planet but the sheets are:
1) the right thickness for spinning but not large enough to cover the shield face or
2) they are large enough to cover the shield face but far too thick to spin effectively
In the end he used sheet brass.
Some info on metal spinning
http://en.wikipedia.org/wiki/Metal_spinning
http://www.metalspinningworkshop.com/MovieClipTwo.html ( A nice pilos helmet could be made this way)
Imagine a shield shape in this diagram as the spun part form/mandrell
http://www.engineersedge.com/manufactur ... -metal.htm
Peter Raftos
