Abstract: A bracket assembly for use in constructing a saw horse has a main bracket and an auxiliary bracket cooperatively engaged to readily form a rigid saw horse for use or readily permit the folding or break-apart of the saw horse for moving or storing. The main bracket has a generally inverted Y-shape with a vertical open-top channel to receive the auxiliary bracket and two inclined open-bottom channels to receive leg members of the saw horse. The auxiliary bracket has a H-shape with a vertical open-bottom channel to engage the vertical open-top channel of the main bracket and a vertical open-top channel to receive a cross-piece member of the saw horse. Attachment means allow a rigid though semi-permanent connection with the leg members and the cross-piece member and a rigid though removable connection between the main and auxiliary brackets.