Add radiuses to internal edges. Most cutting tools are cylindrical, thus achieving internal sharp edges can be tricky. It’s recommended to have internal radii of 130% of the milling tool radius.
Avoid excessively thin walls. Thin features are prone to vibrations and deformations due to heat generated from cutting. This lowers the achievable tolerances.
Specify tolerances only where needed. Adding too tight tolerances will drive up the cost. Standard tolerances according to ISO 2768-m will be applied by default.
Avoid designing unnecessary features and features that can’t be machined. The same goes for really small features, which would need to be micro-machined. Our partners have micro-machining capabilities but this is an expensive process.
Cavities should have the correct depth-to-width ratio: 4 times the width of the cavity. Deeper cavities need to be machined with larger diameter tools resulting in bigger radiuses on internal edges.
Limit thread length. 3 times the nominal thread diameter is enough as strong thread connections take place in the first few threads.
Design holes with standard sizes, as these can be machined with standard drill bits. Non-standard holes are treated as cavities and machined with an end mill tool.