Otto Hopfinger & Sons, Inc.

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Hustisford, WI

Otto Hopfinger Welding, now Otto Hopfinger & Sons, Inc, was founded in 1952 by Otto and Beatrice Hopfinger. In addition to Electrical Components, OHS Inc. manufacturers Machine Guards, Covers, Custom Tanks, Custom Car kits, Model boats, Yard Pools, Sculptures, as well as fiberglass repair. Every product manufactured by OHS incorporates quality craftsmanship with innovative technology. Every project we do for you – simple or complex, large or small – gets special attention from the OHS team.

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Fiberglass Molding

Fiberglass molding is a method for forming complex and intricate parts using fiberglass resin. Though there are several reasons for producing parts and components from fiberglass, the most pressing reasons are the...

Fiberglass Sheets

Fiberglass is a plastic reinforced material where glass fiber is used as reinforcement, and the glass fiber is flattened into a sheet. It is also known as glass fiber reinforced plastic or glass reinforced plastic...

Rotational Molding

Rotational molding, commonly referred to as "rotomolding", is a plastic casting technique used to produce hollow, seamless, and double-walled parts. It uses a hollow mold tool wherein the thermoplastic powdered resin is heated while being rotated and cooled to solidify...

Otto Hopfinger & Sons, Inc.