How to Use the Eid Longhi Anticlastic Stakes to make a bangle

Eid Longhi Anticlastic Stakes
The definition of anticlastic is "having a curvature, at a given point and in a particular direction, that is of the opposite sign to the curvature at that point in a perpendicular direction".
"Cynthia Eid and Betty Helen Longhi,two of the foremost practitioners of shellforming have teamed up to design a stake that remedies shortcomings of all the homemade stakes they'd been using for years. These stakes needed to be hard enough to form any jewelry metal, even titanium, yet yielding enough not to mark silver."
Only available from Sutton Tools in the UK www.SuttonTools.co.uk