Metal powder
The metal powder is mixed with two binders: a liquid binder and a solid binder.
The mixture, liquid at room temperature, is injected in a mould including shrinkage. The mould is cooled in order to solidify the injected part.

A sublimation cycle then takes place to remove the liquid binder.

The removing of the solid binder is done by thermal process. At this stage the part is fragile and look like a sponge.

Sintering
The last step consists of sintering the part. A shrinkage of around 20 % brings the part to its final dimensions with tight tolerances.
The density of the part is then > 98%.