H-surface animation

   
A fundamental piece of the H-surface sits in right prism over an equilateral triangle, with standard handles extending to the top and botttom, and Neovius handles extending to the vertical edges of the prism. Similar as for the P-surface, the height of the box cannot grow arbitrarily, and the family limits either in a foliation by horizontal planes or in singly periodic Scherk surfaces. See also:

Quicktime-Movie