OSH Park now offering Flex PCBs for flex cables, etc

OSH Park, a popular PCB fabrication service used by hobbyists and professionals, is now offering custom flex PCB fabrication. This will be useful for flex cable makers, for the more complex RGB and digital video mods.


$15 per square inch, which includes three copies of your design. For example, a 2 square inch board would cost $30 and you’d get three copies of your board. You can order as many copies as you want, as long as they’re in multiples of three.

Turn Times

Orders will be sent to fabrication weekly, and ship within 21 calendar days of ordering.
You can get a quote, approve a design, and pay for an order at OSH Park.

Flex PCB Specs

Quick Specs

  • 6 mil (0.1524mm) minimum trace width
  • 6 mil (0.1524mm) minimum trace spacing
  • 10 mil (0.2540mm) minimum drill
  • 20 mil (0.508mm) minimum drill slot
  • 5 mil (0.127mm) annular ring
  • Flexible 4mil (0.1016mm) polyimide core.
  • 1oz copper on both sides (1.4mil, 35um)

Detailed Specs

  • ENIG (gold) finish for superior soldering and environmental resistance.
  • Solder resist and silkscreen on both sides.
  • Minimum 15 mil (0.3810mm) keepout distance from traces to the board edge.
  • PCB substrate is compatible with a lead-free process.
  • The boards themselves are also lead free and RoHS compliant.
  • Polyimide Substrate dielectric constant of 3.2 at 1 MHz.
  • Minimum 4 mil (0.1016mm) soldermask web.
  • Maximum soldermask expansion, retraction, or shift is 3mil (0.0762mm).
  • Manufactured in the United States.
  • Drill slots are supported from most tools, when used in typical ways. See our Slots page for detailed information.
  • Board edges and cutouts are laser-milled with a 1 mil (0.0254mm) kerf, and 5 mil (0.127mm) positional tolerance.
  • 15 mil (0.381mm) recommended copper to board edges and cutouts. Copper violating this spec may be damaged during fabrication or shipping.
  • 6 mil (0.1524mm) required copper to board edges and cutouts. Copper violating this spec will be removed prior to fabrication.
  • Minimum 68 mil (1.7272mm) width on internal cutouts. See our [Outline][outline] page for detailed information.
  • Castellations are not supported, and will be removed or fabricated with extremely high failure rates.