Printed circuit board breakouts and contours are normally milled. Please observe the following rules:

  • The inner and outer contours of the circuit board should be indicated with a line width of 1µm! This prevents problems in dimensioning and measurement.
  • Please avoid milling copper (durability of the circuit board, risk of injury)
  • Milling with a diameter of 2.0mm or 2.4mm is at no extra cost (the price for the milling distance is unaffected).
  • The rectangular outer contour comes at no extra cost.

Milling parameters

Option Parameter
OptionMinimum milling tool diameterParameter0,8mm
OptionSmallest radius for inner cornersParameter0,4mm
OptionMinimum spacing copper / milling contourParameter200µm

Sample milling diagram

Sample milling diagram

Outer corners of contours may be 90°, or rounded to your specifications.

The inner corners of contours have at least the radius of the milling tool.

Milled-out portion for exactly rectangular parts

Printed Circuit Board milled-out portion

To hold exactly rectangular parts, the corresponding milled-out portion should also be drilled at the corners; this permits (for example) a precise framing for seven-segment display units.

Z-axis milling (level milling)

Z-axis milling

A variable level elevation can be milled at the edge or within a circuit board. This is called Z-axis milling.