Mold Maker

Herman Mold and Tooling is a precision mold-building and tooling company based in Fairfield, Iowa. We take pride in delivering high-quality blow molds and tooling solutions to our customers.

About the role

We're looking for a skilled, detail-oriented mold maker to join our team. We are seeking an experienced Moldmaker to build, repair, and maintain blow molds and tooling to precise specifications. The ideal candidate has hands-on experience with mold construction, a strong understanding of blueprint reading and mold design, and a commitment to producing high-quality, precision work.

Responsibilities

• Build new extrusion blow molds (cavities, pinch-offs, neck rings, base inserts, and related tooling) from engineering drawings, blueprints, and CAD/CAM data
• Machine and fit mold components to tight tolerances, including split lines, parting surfaces, and cooling/venting features
• Fit and align pinch-off areas to ensure clean parison weld and proper part flash characteristics
• Perform mold repairs, modifications, and preventive maintenance, including pinch-off and cavity rework
• Operate other precision machine tools as needed
• Fit, assemble, and hand-finish mold components, including polishing, texturing, and engraving as needed
• Drill and fit cooling/water lines and venting to ensure proper mold performance and cycle times
• Troubleshoot mold issues during trial runs and production (e.g., parison distribution, pinch-off, venting, cooling) and make corrective adjustments
• Read and interpret complex engineering drawings, blueprints, and mold layouts
• Use precision measuring instruments (micrometers, calipers, height gauges, CMM, etc.) to verify part accuracy
• Maintain detailed and accurate records of mold builds, repairs, and modifications
• Follow all shop safety procedures and maintain a clean, organized work area
• Collaborate with engineers, designers, and other toolmakers to meet project timelines

Requirements

• Minimum 5+ years of experience as a moldmaker or in a related precision toolmaking role; extrusion blow mold experience strongly preferred
• Strong knowledge of extrusion blow mold design, construction, and function
• Familiarity with pinch-offs, neck rings, cavities, base inserts, cooling/venting systems, and split-line fit
• Proficiency operating lathes and other toolroom machinery
• Ability to read and interpret complex blueprints, technical drawings, and CAD models
• Experience with mold trials, troubleshooting, and process adjustments preferred
• Strong mechanical aptitude and attention to detail
• Ability to work independently and manage multiple projects/deadlines
• High school diploma or equivalent required; formal toolmaking apprenticeship, trade school, or technical certification preferred

Physical Requirements

• Ability to stand for extended periods and lift up to 50lbs
• Manual dexterity for precision hand work
• Ability to work in a shop environment with exposure to machinery, noise, and lubricants

Schedule

Day shift 7:00 a.m. - 3:30 p.m. Monday - Friday