How to Make Fiberglass Reproduction Body Parts For A Car

Written by brenda barron Google
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How to Make Fiberglass Reproduction Body Parts For A Car
Reproduce body parts of the car from fibreglass. (Close up detail of a classic car at a car show image by Rob Hill from

When fixing up a car or adding custom modifications, you may find that you need to make parts from scratch. That is, you might need to reproduce body parts of the car from fibreglass. To do this, you need an accurate mould of the part you need. Once cast, you can get on with modifying your car to capture the look and classic feel you want.

Skill level:

Things you need

  • Fibreglass part mould
  • Release compound
  • Fibreglass cloth
  • Resin
  • Hardener
  • Roller or brush

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  1. 1

    Spray the surface of the reproduction mould with mould release compound. Follow all directions on your mould release labelling, covering the surface generously.

  2. 2

    Mix together the resin and hardener following the printed directions on the package in your disposable mixing container. Do this as quickly and accurately as you can before the mould release dries out.

  3. 3

    Apply a thin layer of gel coat to the mould, covering he mould release you applied in step one. Apply layers of fibreglass cloth onto the mould. The gel coat will help hold them in place. Cover the entire mould as quickly as you can.

  4. 4

    Paint on the mixed resin with a roller brush or large paint brush. Saturate all parts of the fibreglass. Use the end of the brush to push the fibreglass and resin into the shape of the mould. Allow the resin to completely dry until hard. This should take a few hours.

  5. 5

    Slip the end of a putty knife along the edge of the fibreglass body part and the mould. Twist the knife softly releasing the body part from the mould. Using your hands, pop the rest of the fibreglass off and away from the mould. Sand the rough edges of the fibreglass body part and prep for painting.

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