Tool for crimping a corner bead piece over an exterior plasterboard corner

A tool for crimping a corner bead piece to an underlying exterior structural corner, comprising the combination of

• a frame having two elongated arms each defining a pair of spaced generally coplanar pads, each pair of pads being angled at a substantially right angle to one another across an interior corner,
• a crimping pin carried relative to each arm, operable in one position to lie recessed behind a respective pad and in another position to have a die end project outwardly beyond the same pad,
• means including a striker, and linkage connecting the striker to the crimping pins operable to tie the movement of the striker to associated movements of the crimping pins,
• said striker being adapted to be hit with a mallet or the like to drive the crimping pins against an underlying corner bead piece and into the corner structure, to crimp parts of the corner bead piece into the corner structure to secure the corner bead piece thereto,
• said frame being formed of a non-magnetic material,
• magnet means carried on and secured to the tool arms, in a recess defined on each arm between the respective pairs of pads,
• each of said magnet means being in the form of an elongated element having opposite flat surfaces of magnetic North and/or South polarity,
• each element of said magnet means being disposed with one of the surfaces close to a face of the arm within the recess and offset from a plane defined by the respective coplanar tool pads of each arm, and with the other of the surfaces substantially coplanar with the respective tool pads of each arm,
• said magnet means being effective upon the corner bead piece being positioned thereagainst to magnetically hold the corner bead piece as positioned relative to the tool,
• operable thereupon to allow one-hand manipulation of the tool and the held corner bead piece, in order to locate the corner bead piece over the exterior structural corner, prior to crimping with the tool.