The patterns for a sponge bath (Fig. 132) can be laid out by one or other of the several methods already shown in connection with cone-work. The only part that is not conical and that calls for attention here is the lip or spout. The pattern for this is shown marked out in Fig. 133. An elevation of the lip fitting on to the side of the bath is drawn and also a half-plan, showing the shape of the top of lip. The arc a b, on Fig. 133, represents a part of the top of bath. The lip curve is divided into, say, six equal parts, and perpendiculars dropped from each of the division points, 0, 1,2, etc., on to the line 0' 6. The joint line is then drawn, passing through the point 0', as shown. Through the points 1', 2', etc., lines are drawn parallel to 6 6. For the pattern the middle line is set down equal in length to 6 6 on the elevation, the intermediate points being obtained by making 0" 1" equal to c 1', 0" 2" equal to d 2', etc.; and then, on the other side of 0 0 making 0" 1° equal to c 1°, 0" 2° equal to d 2°, and so on for the remaining distances. Through each of the points on the middle lines perpendiculars are drawn, as shown by the lines 0 0, 1 1, etc. Now fix the compasses to the length of one of the arcs on the half-plan of lip, and with this distance, commencing at 6 on the life-hand side of pattern, cut off points 5, 4, 3, etc., up to 0. Through each of the points so found draw lines parallel to 6 6, and where these intersect the perpendiculars already drawn through 1°, 2°, etc., will give points on the curve for the right-hand side of pattern. Join these points with a regular curve, add allowances for wiring and a flange, and the pattern is complete.