The casting also called lost wax casting can produce undefined shapes. Even alloys that cannot be cast by other methods or which are difficult to machine can be investment casted. It requires little surface finishing & minor machining. Generally used for small castings, but has been used to produce complete aircraft door frames, steel castings of up to 300 kg and aluminum castings of up to 30 kg. It is generally more expensive per unit than die casting or sand casting.
Technical Specifications
Strength 1
Surface Finish 2.5
Complex Shapes 3
Dimensional Accuracy 2.5
Tooling or mold costs 1
Cost per No 1