Core and core prints used in sand casting

Castings are often required to have holes, recesses, etc. of different sizes and shapes. The impressions can be obtained by using cores. So where coring is needed, provision should be made to support the core within the mold cavity. Core prints used to serve this purpose. The heart of projection print with the pattern and it forms a seat in a model that fits the core sand during pouring of m old. The core font must be of adequate size and shape so that it can support the weight of the core during the casting operation. Depending on the requirement heart can be horizontal, vertical and can be hung inside the mold cavity. A typical job, have a pattern and the mold cavity with heart and heart print shown in Figure.