The processing techniques for plastic prototypes are highly diverse. The choice of which method to use primarily depends on factors such as product requirements, quantity, material, precision, cost, and lead time.
I. Main Rapid Prototyping Technologies (Additive Manufacturing / 3D Printing)
These technologies build parts layer by layer, making them highly suitable for producing single or small-batch prototypes with complex structures.
SLA (Stereolithography)
SLS (Selective Laser Sintering)
FDM (Fused Deposition Modeling)
II. Subtractive Manufacturing (CNC Machining)
CNC (Computer Numerical Control Machining)
III. Molding Process (Vacuum Casting)
This is a highly cost-effective method when small batches (dozens of pieces) of identical plastic prototypes are required.
Vacuum Casting
How to Choose?
Aesthetics: Preferred choices are SLA or CNC.
Functionality: Preferred choices are CNC (authentic material properties) or SLS (complex structures).
Quantity
1 piece: SLA, SLS, FDM, or CNC.
2-10 pieces: CNC machining multiple pieces simultaneously.
10-50 pieces: Vacuum Casting is the best option.
Budget: When budget is limited, FDM is the lowest cost; for ultimate surface quality and performance, choose CNC.