Fit & Assembly
Confirm interfaces, screw locations, clips, mating surfaces and product envelope.
CNC Machining & Functional Prototypes
CNC Machining for Design Validation and Low-Volume Precision Parts
Use machined plastic or metal parts to verify geometry, assembly, function and critical dimensions before committing to injection tooling or production.
When CNC Adds Value
Validate the decisions that are expensive to change after tooling
CNC machining is most useful when the design needs functional evidence, engineering-grade materials or close dimensional review.
Functional Testing
Test load, movement, sealing, mounting or other application-specific functions.
Critical Dimensions
Measure important features before mold shrinkage and tooling variation are introduced.
Bridge Supply
Produce low-volume parts while design, tooling or market demand is still developing.
Route Comparison
CNC, 3D printing or injection molding?
The best route depends on material, geometry, test purpose, volume and how close the sample must be to the final product.
Method
Best use
Main strength
Main limitation
CNC machining
Functional prototypes and precision low-volume parts
Engineering materials, accuracy and surface control
Machining access and unit cost at higher volume
3D printing
Fast form, fit and concept validation
Speed and complex geometry
Material behavior and finish may differ from production
Injection molding
Production-like parts and repeat volume
Final resin, repeatability and lower unit cost at scale
Upfront tooling time and investment
RFQ Information
What to send for a useful CNC quotation
Machined-part pricing depends on geometry, material, tolerances, finish and inspection—not only part size.
Files
3D CAD plus a 2D drawing for critical dimensions, threads, surface finish and datums.
Material & Finish
Specify grade, color, anodizing, polishing or other required treatments.
Quantity & Purpose
Tell us whether parts are for testing, presentation, bridge supply or final use.
Common Questions
CNC machining FAQ
What tolerances can you hold?
Tolerance capability depends on part size, geometry, material, feature accessibility and inspection method. Mark only function-critical dimensions tightly.
Can CNC samples match molded parts exactly?
CNC can validate geometry and function, but molded parts may differ because of resin flow, shrinkage, gate marks, draft and texture.
Can you machine plastic and metal?
Yes. Material availability and final selection are reviewed according to application, quantity and test purpose.
When should we move from CNC to tooling?
When the design, material direction, critical dimensions and expected volume are stable enough to define the mold.