CARSTENS FIBERGLASS MANUFACTURING
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More Than a Manufacturer,

Your Midwest Premier

Fiberglass Partner

COMPONENTS
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Main Street Craftsmanship,
Wall Street Ingenuity 

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Whether youʼre developing a new product from a napkin sketch, looking
to refresh an old design or simply wanting to increase economies of
scale, Carstens Industries team of fiberglass engineers will work with you
to co-create a one-of-a-kind fabricated solution.
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Our Expertise

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OPEN MOLDING

​The most common method of
production where fiberglass is
applied using a ‘chopper’ gun.
Offers great design flexibility and
molds are generally cheaper. Used
with lower volume parts where
​good cosmetics are important.
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CLOSED MOLDING

​This method uses dry fiberglass
cloth that is placed between two
halves of a sealed mold. Vacuum is applied drawing resin into the
cavity to saturate the material. Used
with higher volume parts where
​material thickness is important.
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HAND LAY-UP

​Hand lay-up uses fiberglass cloth
that is saturated with resin and laid
into the mold by hand. Normally
used with complicated shapes or
small parts where reinforcement
​ cannot be easily applied using a ‘chopper’ gun. 
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COMPOSITES SELECTION

​A vast array of materials are
available to complement traditional fiberglass. We can achieve
increased strength, stiffness,
thickness, screw retention, and
corrosion resistance by
​ incorporating other materials. 
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MOLD BUILDING

​All fiberglass parts require tooling. 
A mold is essentially a negative of
the part you wish to build and is
what holds the shape of the
fiberglass while it hardens. Molds
can be made for single use or for
​ full scale production. 
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PATTERN WORK

​Patterns are a mock-up of the
desired part used to create the mold. Typically built of wood or
high-density foam, patterns are
shaped by hand or with a CNC
cutting tool. Patterns are generally
​ one-time use.

COMPONENT 
MANUFACTURING

Carstens specializes in custom and
short-run parts for a vast array of
industries and applications.
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Want to talk about a project?
GET IN TOUCH

Our team of fiberglass experts are here to discuss applications, product designs, and much more.
CONTACT US
Phone: 320-256-3919
Email: info@carstensindustries.com
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PO Box 185
733 W. Main St. Melrose, MN  56352
  • Home
  • Products
    • Production Parts
    • Services
    • Outdoor Products >
      • Deer Blinds
      • Wilderness Toilets
      • Duck Boats >
        • Puddler
        • Pintail
        • Mallard
        • Bluebill
        • Canvasback
  • About
  • Contact
    • Request a Quote