Chain saw cutting assembly

A method of cutting a cornered opening in a concrete wall comprising:

• attaching a track to a wall to be cut;
• mounting a circular saw to the track for movement along a preselected cutting line leading to a corner of the intended opening;
• actuating the circular saw along the track to cut the wall to the corner but not beyond it, thereby leaving in the corner of the cutting line a portion of uncut material;
• mounting a chain saw to the track for movement along the cutting line;
• and
• actuating the chain saw to the corner to remove the uncut portion of material to produce an essentially square cut with respect to the wall surface.

A method of cutting a cornered opening in a concrete wall which adjoins a perpendicular wall surface along a preselected boundary line, comprising:

• attaching a track to the concrete wall;
• mounting a circular saw to the track for movement along a preselected cutting line toward a corner of the intended opening, the cutting line including at least one point on said boundary line;
• actuating the circular saw along the track to cut the wall to the corner but not beyond it, thereby leaving in the corner of the cutting line a portion of uncut material;
• mounting a chain saw to the track for movement along the cutting line;
• and
• actuating the chain saw to the corner to remove the uncut portion of material to produce an essentially square cut flush with said perpendicular wall surface.