Castings in General
Foundries always have a target Mold Revenue and that means different things to different casting processes.
For example: A small part in a sand casting may have to have several cavities in the tool to fill the board to optimize mold revenue,
but the tooling may become an obstacle as multi-cavities can get expensive.
In an Investment casting, the mold or sprue is 3 dimensional, therefore, sometimes you can get more on a mold or sprue than in sand,
and since the tool and the mold are separate things, your investment cast tool can sometimes actually be less expensive than in sand.
While this may not seem intuitive, because IC tooling is more intricate, it can come out that way depending on several variables.
The bottom line is the shape of the part, annual quantity, alloy, dimensional tolerance, cosmetic and strength requirements all
come into play when deciding on what process is best for your part.
