When a composite part needs to be reproduced numerous times, it is efficient to build a mold from which the part can be reproduced. Properly molded composite parts emerge perfectly shaped every time and require little post-finishing work. Molds are commonly made of polyester resin with a variety of reinforcements. For a quick, simple mold for one-time use, casting urethanes are an inexpensive and reliable option.

Male and female molds are the two fundamental types of forms, but they yield significantly different parts. Male (or positive) molds are generally less time consuming and less costly to create in comparison to female (or cavity) molds. However female molds offer numerous advantages for medium to large production runs.

For an in-depth description of the steps necessary to create accurate, high-quality, low-distortion molds for producing composite parts, please read the Mold Construction article in our Learning Center. Shop our favorite selection of fiberglass reinforcements, casting urethanes, epoxy and polyester resins, and tooling gel coats!

  • Chavant Le Beau Touché Clay

    Extremely Smooth with Excellent Adhesion
    5 star rating
    This oil-based modeling clay is non-drying and can be carved and shaped easily without cracking. It features...
  • Chavant Le Beau Touché Clay HM

    Smooth and Adhesive for High Working Temps
    4.5 star rating
    This oil-based modeling clay is non-drying and can be carved and shaped easily without cracking. It features...
  • Chavant Y2-Klay Industrial Design Clay

    Create Accurate Prototypes and Patterns
    4 star rating
    This dark brown, hard styling clay is workable at 135°F and is hard at, or below, room temperature. TY2 Klay...
  • Chavant AutoStyle Industrial Design Clay

    Smooth Medium-weight for Prototypes
    5 star rating
    Professionals want the workability of a sulfur-based clay…without the risk of compromising their metal...
  • Chavant Monu-Melt Hard Design Clay

    Meltable Clay that can be Brushed onto Foam
    This dark, forest green colored, sulfur-free modeling clay offers a new option when creating plugs for new...
  • Organic Vapor Respirator

    Stay Safe, Stay Comfortable
    With dust, fumes, vapors and other air borne contaminates are a common place in any workshop, it's important to keep...
  • Latex Gloves

    Protect Hands for Most Lamination Projects
    For most lamination projects, these affordable latex gloves will last for several hours at a time. They are...
  • Nitrile Gloves

    Excellent for General Use
    Nitrile gloves are excellent general use gloves in a chemical or solvent environment and are an excellent...
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