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Rotational Molding of MDPE Sailboat Hull for the Nautical Industry


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A client in the nautical industry approached Rhino, Inc. in need of a rotationally molded sailboat hull and outriggers. The hull and outriggers would be key components of a high performance recreational sailboat. In addition to part production, Rhino performed mold maintenance upon receipt of the tool to correct some manufacturing issues that had plagued the former molder. Secondary operations included post mold trimming, hatch trim and fit-up, and cleat/accessory assembly. Special features incorporated were a molded in aluminum outrigger and rudder sleeves and multi-color mold-in graphics.

The hull was 192 inches long, 40 inches high, 24 inches wide and weighed 100 pounds. We worked within tolerances of +/- .144 inches. The material used was medium density linear polyethylene. The deck had a high-texture finish applied for an anti-slip foothold, and the hull was hand polished providing a smooth as glass surface, eliminating unnecessary drag.

Once our team completed production and inspection, the product was delivered to the client, who was completely pleased with all aspects of Rhino's work. To learn more about this project, or for more information on our other products and services, please contact Rhino, Inc.






Rotational Molding of MDPE Sailboat Hull - Project Details

Product Description

This Rotational Molded Sailboat Hull is a key component of a recreational sailboat, which is used in a resort-style application.

Capabilities Applied/Processes

Rotational-Molding
Mold Maintenance
  • Cast mold was provided by customer
  • Rhino has performed mold modifications and mold surface and parting line maintenance since acquiring tool
Secondary Operations
  • Cut hatch opening
  • Trim Flashing
  • Fit Bolt-On Cleats/Accessories

Equipment Used to Manufacture Part

Ferry 550 Oven
Hand-Held trimming tool
Router with cutting fixtures

Overall Part Dimensions

Length: 192"
Width: 24"
Height: 40"

Tightest Tolerances

±.144"

Material Used

Medium Density Linear Polyethylene

Component Finish

Deck Side: High Texture
Hull Side: Hand-Polished

Color

Blue
White

Yellow

Special Features

In-Molded Aluminum outrigger and rudder sleeves
Multi-Colored mold-in graphic

In Process Testing Performed

Parting line void inspection

Estimated Part Weight

100 lbs

Industry for Use

Nautical
Recreational

Standards Met

Customer supplied CAD Drawing

Product Name

MDPE Sailboat Hull