3D digital sculpt, Clay sculpt, 3D print sample, Prototype with color painted. 

Service: 3D printed sample & prototype with color painted, only 3D digital sculpt service will be ok as well.

Technology options: Digital Sculpt by software  and Clay Sculpt by hand.  But now digital sculpt is the trend.

Size: all custom sizes as you want.

Material of prototype: poly resin, clay, ABS or PVC also will be workable if CNC sculpt the sample.

Software: Freeform, Proe, Z-Brush is coming.

Info need: 2D sketch/drawing, ref real sample, or 3D files all will be workable for prototype making.

Timing: 5days for initial sculpts, usually 12days for prototypes with color painted. The complex designs will take a little long bit.