Online Rapid CNC Machining Prototyping Service

Choose materials suitable for CNC machining.
Consider hardness, machinability, and cost.

Maintain uniform wall thickness (ideal: 1–6 mm).
Thicker walls may require additional considerations like tool limitations and cooling.

Specify realistic tolerances.
Standard CNC tolerances: ±0.005 mm to ±0.1 mm depending on material and complexity.

Design holes with appropriate sizes.
Use through holes instead of blind holes where possible. Ensure hole depth-to-diameter ratio does not exceed 2:1.

Avoid sharp internal corners.
Use a minimum internal radius of 0.5–1.0 mm to improve tool life and part strength.
External corners can be sharper, but rounded corners are preferred.

Design parts with accessible features for tooling.
Avoid overhangs and deep pockets that complicate machining.

Design parts symmetrically to reduce machining time and improve part balance, preventing warping or deflection during machining.

Design parts to be easily assembled with minimal extra processes.
Avoid tight-fitting components unless necessary.

Specify surface finish requirements (e.g., rough, smooth, polished).
Higher finish requirements increase machining time and cost.

Minimize material removal.
Parts with more material removed increase machining cost.

Avoid complex geometries and excessive small features that are hard to machine.
Simplify design wherever possible.

Design parts with features to ease fixturing (e.g., locating holes).
Consider available tool sizes and types.

Use standard thread forms (e.g., UNC, UNF) for cost-effective machining.
Ensure adequate depth for blind/tapped holes to accommodate threads and prevent tool damage.

Specify undercuts clearly and ensure tooling can access those areas.
Use EDM if necessary for difficult undercuts.

Apply draft angles (typically 1° to 3°) on vertical surfaces for easier part removal and reduced tool wear.