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Since 1994 Granger Industries has provided industry leading solutions for a range of industries spanning from Aerospace, Defense, OEM Manufacturing, Agri-Products, Safety, Material Handling, Recycling and so much more. Granger actively pursures "Solutions beyond Expectations" for all customers, large and small.

Rotational Molding Tooling or Molds

Fabrication of Rotomolding Tooling

Molds for rotomolding are typically manufactured from aluminum, steel, stainless steel or even brass. Rotomolding Tooling is typically produced by either means of fabrication, casting or even machining Some Rotomolding leaders have developed the ability to build hybrid tooling which allows for various complex features and in some scenarios faster turn around times. Rotomolding tools are necessary to produce actual rotationally molded products. You can prototype Rotationally molded products via various alternative means and methods, but to prototype an actual rotomolded product, you will have to be build the necessary tooling. The upside to this is that in comparison to the most common plastic manufacturing processes, Rotational Molding tooling is typically a fraction of injection or blow molding molds. Sometimes to the point that Rotational Molding can be an attractive option to do product testing in a market prior to major mass production.

Rotational Molding Tooling Being Fabricated
The beginnings of a new fabricated Rotational Mold

Rotomolded Tooling, is one of the integral initial capital investments that is required to produce a Rotationally Molded Product. Today's leading Custom Rotational Molding houses are typically forced to have in house tooling centers and repair shops to keep their customers production going, requiring running tools and also to consistently grow new customers with new tooling. Unfortunately for many Rotational Molding Companies, they do not not offer in house rotational mold tooling maintenance, nor do they build tooling in house. Therefore when your tooling cracks, frame work breaks or the parting line gets damaged, not only are you out of production, you could be out of production for months! As they will have to send your tooling out to another shop to fix. Costing you loss of production, loss of sales and ultimately loss of profits! Don't risk your business or your customer relationships to such! The prices for Rotomolding tools are generally competitive amongst most quality molders, yet some still risk their business on poor tooling with numerous issues! Rotomolding tooling is generally no different than most other things in life, you get what you pay for!

Rotational Mold Shop Tooling in Progress
Component being fabricated for a complex fabricated Rotational Mold
Rotational Mold Shop Tooling in Progress
Very intricate half of a very large rotomold tool
Rotational Mold Shop Tooling in Progress
A new nearly complete Rotational Molding Tool/Mold

Granger ISS Shelter Mold Bottom
Tornado Shelter mold built by Granger Plastics

The Granger ISS Tornado Shelter mold is a great example of a high quality mold that required lots of innovation and design to accomplish its goals. A number of trade secrets help manufacture the Granger ISS, but the mold is consistently in production and has undergone a number of moldifications even. It's the heavy duty framework and the heavy duty clamps that make one of the biggest differences in rotational molds being manufactured and parts being produced by Granger Plastics.

Granger ISS Being Pulled From Rotational Mold

The picture above displays the inner plug of the Granger ISS Tornado Shelter mold being pulled. This is probaby the most integral part of the monsterous 3 piece tooling. Also notice the high quality mirror polish finish on the plug of the Tornado Shelter tooling. This allows for a very nice high polished inside surface on the finished product. The tooling for the Granger ISS is probably one of the most intricately designed Rotational Molds in the industry, also while potentially being one of the most expensive. Granger Plastics has performed some pretty astonishing feats inside of its mold shop and metals fabrications departments .

Bottom of Mold
Bottom of Extremely Large Fabricated Rotational Mold by Granger Plastics

The Granger Mold Shop Difference
Granger Aerospace LD 2 Mold
Granger Aerospace LD2 Mold Completed. Notice the heavy duty clamps and heavy duty tubing.
Granger Aerospace LD 2 Mold
Internal Surface of the completed Granger Aerospace LD 2 Mold
Granger Aerospace LD 2 Mold
Heavy Duty Frame Work and Clamps on Completed Granger Aerospace ULD 2 Mold


Good quality Rotational Molding tools or molds are built with heavy duty frame work, this helps keep the tooling in good shape and allows the tooling to maintain significantly better than tooling with thin gauge tubing and light weight clamps. Heavy Duty clamps will go miles further in the long run and keep your tooling running and in better shape overall

Poor Condition Rotational Molds Poor Condition Rotational Molds
Refurbished Rotational Mold
Existing Tooling Sent in By Granger Customer; tooling nearly ruined by previous molder
Tool after complete rebuilt and refurbished by Granger Plastics Mold Shop

If your tooling is fabricated by Granger Plastics Mold Shop, another advantage is that as long as your tooling is in production at Granger Plastics or a Granger Industries Facility, Granger Plastics will maintain your tooling free of charge. While most other most mold shops will nickel and dime you to death over your tooling expenses such as clamp replacements, sandblasting, mounting plates, small weld repairs, some molders will even charge to store your tooling! Granger Plastics wants your tools in production, producing quality products for you to satisfy your customers, thus making it a prosperous and beneficial relationship for all of us.

Rotational Molding Mold Shop Video


Rotational Molding Production & Mold Shop

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