Manufacturing know-how
Decades of plastic extrusion, molding, tooling, finishing, and production problem-solving.
Custom plastic manufacturer
Custom Plastic Extrusion and Molding Built to Spec
MAC manufactures custom plastic extrusions, injection molded parts, tooling, fabrication, finishing, and assemblies around your drawing, material, dimensions, timing, and production reality.
ExtrusionsToolingMoldingAssembly
Why buyers trust MAC
Custom plastic parts backed by real production depth.
Midwest reach
Two production locations supporting custom plastic buyers and repeat orders across North America.
Production discipline
Manufacturing focused on quality, repeatability, timing, packaging, and practical delivery needs.
Not off-the-shelf
Parts built around your drawing, dimensions, material needs, application, and real-world fit.
Quality Control
Our quality team checks custom plastic parts against the dimensions, material requirements, fit, finish, and packaging details that matter to your order.
Custom extrusionFinishingWarehousing
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Design & Build
Bring a drawing, sample, or rough requirement. MAC helps review the material, shape, tooling path, and production approach before the part goes into repeat manufacturing.
Injection moldingVacuum tubingFabrication
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Engineering & Tooling
In-house tooling support and practical engineering help MAC dial in the profile, tolerance, material, and production setup before volume work begins.
AssemblyEngineering supportTooling
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Process support
Capabilities
Custom extrusion, molding, tooling, engineering, fabrication, assembly, and secondary operation pages for custom plastic buyers.
Part categories
Products
Plastic profiles, tubing and pipe, rod, trim and strips, channels, seals and gaskets, bushings and spacers, industrial plastic components, OEM custom plastic parts and components, and custom injection molded parts.
Material guidance
Materials Center
Material information for MAC Plastics extrusion programs, including rigid and flexible PVC, commodity thermoplastics, engineered resins, filled resins, clear materials, custom colors, and UV package options.
Application fit
Industries We Serve
Industry pages for aerospace, defense, agriculture, marine and pool, lawn and garden, telecommunications, construction, industrial manufacturing, transportation, sanitation, utilities, and energy applications.
Engineering guides
Engineering Resource Center
Design guides, engineering guides, manufacturing guides, material selection guides, tolerance guides, and design for manufacturability articles.
Materials and specs
Materials we’ve specialized in for 30+ years.
From material selection and dimensions to tooling support, quote requirements, industries, and locations, MAC gives buyers the details they need to move with confidence.
- PVC
- HDPE and LDPE
- Polypropylene
- ABS
- Polycarbonate
- Nylon
- TPE and TPU
- Specialty Formulated Compounds
Production footprint
Two Midwest facilities with the capacity to put each custom part on the right line.
Buyers get flexible capacity across extrusion, co-extrusion, and injection molding, with equipment selected around the material, profile, volume, and production schedule.
20Extrusion lines
6Co-extruders
3Injection molding machines
01
Production location
Olney, Illinois
715 N West Street, Olney, IL 62450
618-392-3010
02
Production location
Hamilton, Indiana
7450 South Homestead Dr., Hamilton, IN 46742
260-488-3999Quote requests
Send the part details that matter.
Drawings, samples, dimensions, target materials, application needs, finishing requirements, and delivery expectations all help MAC quote the right production path.
Request a QuoteCore work
Built for engineers, purchasing teams, and production buyers.
Custom Plastic Extrusions
Made-to-spec profiles, tubes, channels, guards, guides, light traps, trim, and specialty parts for OEMs, distributors, public utilities, and industrial buyers.
Injection Molding
Production support for molded components, assemblies, and repeatable parts where fit, strength, color, packaging, and delivery matter.
Engineering and Tooling
Design support, tooling builds, CAD collaboration, prototype guidance, and production tooling for parts that must match real-world dimensions.
Fabrication and Assembly
Finishing, secondary operations, assembly support, warehousing, packaging, and customer-specific production handling.