Firstly, simplify your design to reduce complexity and save on machining time and labor costs. Use standard features whenever possible and avoid unnecessary customization. Consider using simpler geometries such as chamfers and radii, and avoid features that require more complex machining, such as deep pockets and thin walls.

CNC turning
Secondly, choose the right materials for your parts to balance performance and cost. Different materials have different machining characteristics and costs, so it’s important to consider both when selecting a material for your application. Consult with your machinist to find the best material that meets your requirements.
Another tip is to optimize your design for manufacturing. For example, designing parts with proper draft angles and tolerances can help reduce manufacturing time and cost, while still maintaining the required functionality.
Finally, work closely with your machinist during the design phase to identify any potential issues early on. By catching design issues before machining begins, you can save both time and money.