| Mould |
 | | Hand lay up to make the preformed racket |  | | Inspecting and finishing the cured racket |  | | Racket mould |
Several sheets are laminated together with fibre alignment of successive sheets angled to provide multi-directional strength properties. The laminated sheet is then rolled around a plastic tube capable of being subsequently pressurised with air. Local areas are reinforced and the assembly is fitted into a mould to form the main ‘key-hole’ shape of the frame together with a ‘bridge-piece’ to complete the loop of the head. The mould is closed and heated at 150ºC for several minutes while the plastic tube is inflated to provide moulding pressure until the resin is cured.
After removing from the mould, the surface of the frame has to be sanded to remove excessive resin and to produce a smooth surface.
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