• Computer design of a steel substructure and cut model according to customer supplied data
  • Steel substructure
  • Plug under construction
  • Glass fibre laminate is applicated on a layer of plywood
  • Hand-laid laminate covers the balsa core
  • Pasting
  • Fine cutting the paste giving it a smooth surface
  • Computer design of a rotor blade model and steel substructure according to customer supplied data
  • Steel substructures are used in master plug construction for a stiff and durable base
  • Wooden frames are attached to the uprights of the steel substructures giving the plug its shape
  • Glass fibre laminate is applied on a layer of plywood
  • Hand-laid laminate covers the balsa core
  • High quality EP paste is applied on a laminate layer made of E-glass and epoxy resin
  • Fine cutting the paste giving it a smooth surface

Knierim Tooling's technology

A precise mould is produced of styrofoam, MDF, or block material. If necessary it will be covered by a layer of laminate using epoxy resin before the high quality epoxy paste is applicated. Machining the paste precisely to the given geometry gives the mould the exact shape. Long-lasting master plugs are built on a steel substructure with an epoxy sandwich laminate.