Extrusion Blow Mold Manufacturer & Special Machining | Herman Mold + Tooling, Inc.

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For nearly four decades, Herman Mold + Tooling has been turning ideas into production-ready extrusion blow molds. What started in 1987 has grown into deep expertise in precision mold building and special machining — trusted by manufacturers across automotive, consumer goods, agriculture, construction, and lawn & garden to get their parts right, every time.

industries we serve

Automotive

A green truck driving down a dirt road photo.

Lawn & Garden

A large plastic garden shed in a backyard.

Agriculture

A green tractor pulling a large tank capacity Pull Type ag sprayer in a field.

Construction

Orange plastic construction cones guide traffic away from the construction zone.

Power & Sport

A person driving a Polaris utility task vehicle in the dessert.

Medical

Plastic medical bed board/hospital headboard.

Discover the art of precision mold making at Herman Mold + Tooling. Custom extrusion blow molds for plastic products.

From initial mold design and container development through trim tooling, cavity work, and final special machining, we handle the full lifecycle of your tool in-house — engineered for reciprocating screw, shuttle, and wheel machine platforms alike. Our team combines precision CNC machining with hands-on mold-making expertise to hold tight tolerances, optimize cooling channel design for faster cycle times, and deliver molds that run clean from first shot. Whether you need a new mold built from the ground up, a refurbish on an aging tool, or fast-turn sampling to validate a design, we bring the same level of craftsmanship that's kept manufacturers in automotive, consumer, agriculture, construction, and lawn & garden coming back since 1987.


"The in-mold cutting and punching are working very well, and everyone is impressed with the design and prompt delivery of the mold."


a recent herman mold + Tooling, inc. customer review

Image of garden pot blow mold mounted onto CNC machine for finishing cutter paths.

Precision by design.

Every extrusion blow mold starts with 3D CAD design and engineering review, so we can catch issues before they hit the shop floor. We build custom tooling in single-cavity, multi-cavity, and family mold configurations — from 12 inches to 156 inches — for parts across automotive, agriculture, construction, and lawn & garden.

See how

Built to run.

Our shop runs on 5-axis and 3-axis CNC mills, lathes, and gun drills to hold tight tolerances on every mold we build. Each extrusion blow mold is water- and hydraulic-tested before delivery, so your production line keeps running the moment it arrives.

Our story
A red Polaris utility task vehicle (UTV) in the mountains.
A CNC machinist sitting in front of machine holding controls programming machine to create tooling.

Craftsmanship since 1987.

Our team of machinists and mold makers has delivered more than 9,100 extrusion blow molds worldwide, combining hands-on craftsmanship with modern CNC technology. We're always looking for skilled hands to join our shop floor.

Join our team


“The communication and mold development skills of Herman Mold + Tooling makes our mass production consistently high quality.”


– Kenji Kimura, YASUFUKU., U.S.A. Inc.

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