Rapid CNC Parts · Delta, Utah
CNC Machining Design Guidelines
Clear drawings and practical features make machined parts easier to review and plan.
Tool access and internal corners
Round cutters leave an internal radius. Use practical radii where the function allows, and consider how a cutter reaches each feature. Deep, narrow pockets and small radii can increase complexity.
Walls, holes and threads
Thin walls and long slender features can deflect. State required hole diameters, depths, thread standards and thread depths on the drawing. Identify critical bores, mating faces and datum references.
Tolerances and finish
Use tolerances that match the actual function. Tight tolerances, surface-finish requirements and coating allowance should be discussed before quoting. Do not assume a general guide establishes a guaranteed shop tolerance.
Files for review
Send a dimensioned drawing and available CAD model, along with material grade, quantity, finish and timing. Machining requests receive manual review; online quoting covers flat laser-cut parts.
Making a flat part instead?
See the laser cutting design guide, CutReady DXF, or ask the shop.