Custom Parts CNC Machining Service

Use rounded corners (radii) instead of sharp internal corners. Sharp corners can cause tool wear and weak points in the part. External corners should also be rounded or chamfered to avoid damage.

For drilled holes, keep the depth no more than 5 times the hole diameter. For tapped holes, the depth should be 3 times the diameter for small sizes (e.g., 1.5-5 mm) and 4-6 times the diameter for larger sizes.

Ensure tapped hole diameters are slightly smaller than the thread size (e.g., for M6, use a 5 mm hole diameter). Limit thread depth to 1.5-2 times the thread diameter.

Avoid undercuts or difficult-to-reach areas that require special tools. Use simple shapes or profiles for easier machining (e.g., avoid square or sharp-angle pockets).

Avoid overly tight tolerances unless absolutely necessary. General tolerances (e.g., ±0.1 mm) are often sufficient for most parts.

Design parts with enough space around features for tools to reach them. Avoid narrow or deep features that are hard to access. Ensure adequate clearance for tool paths to prevent interference.

Keep wall thickness consistent to avoid difficulties in machining and potential warping. Avoid very thin sections, as they can be hard to machine accurately.

Add chamfers (typically 0.5-1 mm) to edges to prevent sharp burrs and make part handling easier.

Specify rougher finishes (e.g., Ra 3.2) when possible to reduce machining time and cost. Finer finishes require more time and expensive tools.

Design parts that are easy to assemble by incorporating self-locating holes or mounting points. Minimize the number of tool changes and fixture adjustments to reduce machining time.

Keep part weight and size in check to avoid needing special equipment or setups for larger or heavier parts.