I used US Industrial Tool and Supply's hand squeezer to repair trailing
edges and add pma'd bulb on two '56 Cessna flaps. They turned out nicely
and two A&P's liked them, but the squeezer was hard to use with 1/8"
diameter 2117 rivets.

Avery and Tatco sell nice hand squeezers. Avery is better because the
handles are longer.