This page describes the steps to making a basic T-fold, one of the main categories of fold-forming. Numerous variations are possible from this simple starting place.
An example of a T-fold forged with the legs pinned in the vise. On the right is one where the entire table area was thinned with a rounded hammer face, thus arching over the table when annealed and opened
An example of a basic T-fold forged with the legs free. Note how the twisting is modified and affects the table shape upon opening.