Concept Sales Inc
Concept Sales Inc
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  • Home
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    • Rotational Molding
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    • Fiberglass
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Fiberglass & Composite Molds

About Fiberglass/Composite Molding

Craft Parts of Any Size, Shape & Color

There are a couple different ways that fiberglass parts can be made. The final piece and what its specifications are determines what process will be used. The first process used is called open faced contact molding. In this process a one sided mold has fiberglass either sprayed into it or has layers of fiberglass fabric laid down inside the mold then an epoxy applied. Open molding creates parts that require a finished surface on one side only. 

The second process is called closed molding, which is done by sucking the fiberglass resin into a mold, creating parts with a finished surface on all sides. 

South Dakota Manufacturers Representative Finishing

The finishing process of a fiberglass part can also be done in a couple different ways. First off a part can be sanded and painted to a mirror shine or a gel coat can be applied in the mold. A gel coat is a form of finishing that, depending on the quality of the mold, has the ability to create a show quality finish in almost any color. Items such as boat hulls are a common item that is gel coated. The process basically eliminates the need for secondary finishing processes after a part comes out of the mold by finishing the inside surfaces of the mold. When a part comes out of the mold the gel coat will have the same level of finish as the mold. 

Advantages of Fiberglass/Composite Molding

Advantages of Fiberglass/Composite Molding

Advantages of Fiberglass/Composite Molding

  • Won't corrode or dent like steel
  • Can be gel coated for a finished surface or sanded and painted to a mirror shine
  • Almost any size project can be made Is very rigid and fairly lightweight
  • Can easily be molded into complex designs
  • Tooling costs are relatively inexpensive
  • Good for low quantity jobs

Our Capabilities

Advantages of Fiberglass/Composite Molding

Advantages of Fiberglass/Composite Molding

  • Open faced contact molding using wet or hand lay-up
  • Closed molding using light RTM and vacuum bag process
  • In-house design assistance
  • Adhesive bonding and assembly of finished components

Our Manufacturer's Representatives are Ready to Serve You

Contact Us

 © Concept Sales Inc.  |  605.528.3996  |  26189 463rd Ave, Hartford, SD 57033  |  Powered by Complete Media, Inc.


 The Midwest manufacturers' representatives at Concept Sales Inc. have been proudly representing manufacturers in roto-molding, blow molding, injection molding, thermoforming, equipment, safety decals and more since 1998.

  • Home
  • Products and Services
  • Rotational Molding
  • Injection Molding
  • Blow Molding
  • Fiberglass
  • Thermoforming
  • Decals
  • Custom Seed Box Signs
  • Partners
  • Distributors
  • About
  • Contact

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