Methods for forming frame corners

摘要

Methods and systems for forming a frame, such as door and window frames, are provided. In some implementations, a method for forming a frame includes clamping the frame on a rotation device, the frame having a plurality of frame members and a plurality of corners defined by the plurality of frame members. The rotation device is for rotating the frame and providing a liquid material into each corner of the frame through injection holes formed in frame members. The liquid material sets to form a solid structural member bridging and connecting the frame members. The liquid is poured into the corner area with the corner at the bottom and the members diverging upwardly and outwardly therefrom and the liquid material has a viscosity so that it settles to form a level height into and across each frame member but does not leak from the butting surfaces of the members.