Aerospace fixtures are essential work holding devices used during the manufacture, assembly and inspection of aircraft parts.

At Sigma, we offer a comprehensive design, manufacture and calibration service for aircraft pipe assembly build fixtures. Using either customer-supplied CAD model data or master pipes, our engineers design and model bespoke fixtures for both building and inspecting rigid pipes.

Fixtures are manufactured, usually in aluminium, in our tool-room and calibrated using a CMM.


  • Robust aluminium construction

  • Manufactured and calibrated to original CAD coordinates

  • Dual purpose: assembly aid and ICY validation