What type of surface finish available on prototypes

Common Rapid Prototyping Materials:

ABS: Suitable for general purpose plastic prototyping with smooth finish.
PC (Polycarbonate): Strong and robust prototypes in clear or translucent finish.
PP (PolyPropylene): Good for Clips and snap featured prototypes.
ACRYLIC (PMMA): Good for clear fully transparent prototypes like Glass.
NYLON (PA6): Excellent abrasion resistance, good for Gears, Bearings.
ACETAL (DELRIN): Excellent durability, Self-lubricant, Good stiffness.
MORE PROTOTYPING MATERIALS: Check material overview link.

What type of Finishing results achievable on Prototypes?

Please click image links below, showing surface finish on machined parts

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Common Rapid Prototyping Materials: