In Lost Foam casting technology, products are cast by using polystyrene or co-polymer Foam patterns. The foam pattern is then embedded in dry unbonded sand, which is compacted by vibration. Then molten metal is then poured on to the foam pattern by means of a funnel runner system. Because of the high temperatures involved the foam pattern evaporates. Once cooled the castings are easily removed from the sand. 
The Lost Foam technology enables very complex products to be cast in one piece, because the pattern can be built up in several sections which are then bonded together using very  sophisticated adhesives. Every cast product a foam pattern is needed to produce a casting.
There are advantages to the Lost Foam Process compared to conventional casting methods. 
 
 
 

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