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Rotational Molding Design Guidelines Part 3

DESIGN GUIDELINES FOR ROTATIONAL MOLDING The Types of Molds Used In The Rotational Molding Process There are three different types of tooling most commonly used in Rotational molding – Cast Aluminum, CNC Machined Aluminum, Electroformed & Fabricated Sheet Metal. Each type of tooling has it’s own benefits and product design parameters. Cast Aluminum Molds Cast  Continue Reading »

Rotational Molding Design Guidelines Part 2

DESIGN GUIDELINES FOR ROTATIONAL MOLDING Venting Due to gasses that are expelled when the resin cures, a vent hole is required in all molds and therefore products. The size of the vent is dependent upon the volume of the cavity. Formula to determine vent size is 1/2″ i.d.. vent for every cubic yard of volume.  Continue Reading »

How to Choose a Type of Rotational Mold and Rotational Mold Maker

Choosing a Type of Rotational Mold and Rotational Mold Maker With some in in rotational molding, the choosing of the type of rotational mold and who to make it is a routine task. “When I need a mold, I go to XYZ and get a cast mold. That’s what I do and that’s the only  Continue Reading »

Rotational Molding Design Guidelines Part 1

DESIGN GUIDELINES FOR ROTATIONAL MOLDING Parting Lines When designing your product keep in mind how the mold will open and close around the product. The least expensive, least maintenance mold has two pieces. If your product will require multiple piece molds, you are increasing the chance of wear and flashing due to the operator handling  Continue Reading »

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