On Sep 11, 2:49*pm, Ignoramus1469
wrote:
http://www.youtube.com/watch?v=naUm3gj1WWM

What are those clamps called, that grab the piece from the sides
instead of from top?

Cam clamps? These are self-tightening, with a Yin-shaped pawl. Or
maybe it's Yan-shaped.
Edge clamps? Kinda like a C clamp but with three moving jaws, at 0,
90, 180 degrees.