The exterior finish of a fibreglass part is as high, as any buyer of a sports car would expect on a GRP body. This analogy is used to capture the quality of gloss, almost lacquer like finish achievable. Of course this type of finish is only possible by absolute attention to the detail finish of the master pattern. These are either CNC machined
in high density tooling board as one piece, or as a set of parts for very large patterns, subsequently keyed together bonded and reinforced.
Traditional wood materials are also used to make the simpler less contoured patterns offering a low cost option. But whether machine or hand made the resulting pattern will have patient super finishing applied. This pattern will be used to make the structurally supported master mould, from which one or more fibreglass parts will be laid up.
The gelcoat, which is pigmented resin to any desired colour from the RAL or Pantone range, within manufacturers range or matched from customers master sample In addition to the finish from in mould gelcoat, spray finishes can be applied that can achieve metallic effects, the finish can be matt if required by finishing the pattern matt. This will then also give the same matt surface finish to the master mould.