Are You Looking for a Solution to a Custom Rotational Molding Project?

Our rotational molding design team has the expertise to meet this challenge head on and produce even complex roto molded items to the most exacting specifications.

Here’s how we work with you to take your concept from “idea” to Production.


Design & Engineering

  • Engagement with our Roto Mold Engineers
  • Design Your Roto Mold Product
  • Create Computer Model Simulations


Preparation & Testing

  • Fabricate Your Mold
  • Tooling Budget & Material Guidance
  • Identify Secondary Processes
  • Approval of Sample Parts
  • Quality Assurance


Production Fulfillment

  • Roto Mold Production
  • Product Assembly
  • Packaging and Shipping
Custom Rotational Molding / Custom Roto Moulding Projects

Ready to Get Started?

To get the ball rolling on your custom rotational molding project, please fill out the following custom roto-mold project checklist, and someone from our team will get in touch with you shortly.

Custom Rotational Molding FAQs

Will your team help with our custom rotational molding design?

Yes. Our design team and engineers have the expertise to meet your challenge head on. Before we start your project, you will meet with our engineers to confirm your idea can be rotational molded, design your product, create computer model simulations, discuss tooling budget and material guidance, and identify and secondary processes.

What if I already have a mold, can I use it on this custom rotational molding project?

Yes, in most cases existing molds can be used assuming they are in good, working condition. In some cases minor adjustments are required to allow the mold to fit our machines.

What type of materials can be roto molded?

Materials that can be rotationally molded include:

  • Linear Low-Density Polyethylene (LLDPE)*
  • Low-Density Polyethylene (LDPE)*
  • High-Density Polyethylene (HDPE)*
  • Medium-Density Polyethylene (MDPE)*
  • Pipe-Grade Polyethylene (PGPE)*
  • Homo-Polymer Polyethylene (HPPE)*
  • Homo-Polymer Polypropylene (HPP)
  • Co-Polymer Polypropylene (CPP)
  • Polyvinyl Chloride (PVC)
  • Chlorinated Polyvinyl Chloride (CPVC)
  • Polyvinyldene Fluoride (PVDF)
  • Thermoplastic Polyester Elastomers (TPE)
  • Nylon

*Includes cross-linked, regrind, and recycled.

Do you offer mold in graphics?

Yes, we offer mold in graphics. Mold in graphics are permanent, in-mold decorating solution for rotationally molded plastic parts. They are a perfect option for providing durable serialization, barcoding, QR coding & more!

What color options to your provide?

Sherman-Tank offers a wide variety of standard colors for your custom roto mold project, and can even color match if a specific color is required.

Do you support any secondary processes for my custom rotational molding project?

Sherman-Tank offers the following processes:

  • Assembly
  • Packaging
  • Mold in / mold on graphics
  • Labeling
  • Fabrication Services

We provide metal and plastic welding for up-fitting tanks to fixtures and support structures. Our techniques allow for a wide variety of joining and assembly options.

Whether and how your product will be subject to welding is addressed during design in an effort to minimize the required steps and through this the cost.