Corner Finish. Some form of corner finish is a necessity upon outside corners of a plastered wall, and galvanized metal corners should be nailed upon the laths. Of these there are several kinds, one of which is shown in Fig. 133. There is little choice among them, They have supplanted all other methods of corner finish upon the best class of work.

Fig. 133. - Metal Corners.

Strips or casings should not be used upon corners, as they always make a bungling job, while the metal corners are perfectly firm and rigid. Another, and until recent years the common way, is to finish the corner by a corner bead, as shown in Fig. 134. This method makes more work for the plasterer, as the plastering has to be stopped against it, forming a querk, as at a, but it is still used to some extent, since if well done it makes a good-looking corner.