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Explanation: Abajo te pongo referencias y sitios de lo que encontré. Yo prefiero maquinado en verde pues en google aparece así aunque presinterizado explica mejor lo que es el proceso. Bueno, mira las referencias y decide si te vale alguna.
Pre-Sinter (Green) Machining:
Machining in the pre-sintered, or green, state is often desirable because it allows manufacturing of finished shapes without expensive grinding of sintered material. Green machining is accomplished using conventional CNC lathes and mills. Stock removal can be accomplished 15 times faster in the green state than in the sintered state. Green machining provides parts to tolerances of ±0.5 percent to ± 1.0 percent of their final dimensions. Typical green machined surface finishes range around 32 to 64 microinches.