EXAMPLES OF WORK portions for cleaning and coring. Many beds of large dimensions are made without full patterns from motives of economy. The exterior mould is Fig. 68.—Formation of Curved Corner Fig. 69.—Method of making a Curved Corner made from a skeleton frame, aided with strickles or sweeping boards, and cores impart the shapes to the interior portions. In all long and narrow beds, solid-plated on one face only, the effect of unequal shrinkage is to Fig. 72 Methods of Blocking adopted for Curves cause curving or camber, the solid-plated portion when cold becoming concave lengthwise to the extent of from J in. to | in., depending on the length. The pattern must be curved in the opposite direction to neutralize this effect.