Injection molding
without the tooling risk.
The highest cost in injection molding is the mold. We review wall thickness, draft angles, undercuts, and gate locations before tooling starts. First shots that land right. Aluminum tooling for prototype and bridge production. Steel tooling for high-volume runs.
One contact coordinates design review, tooling, production, and finishing from start to finish.
Choosing your injection molding process.
The tooling and process decision drives cost more than any other choice in molding. Here is how we match it to the part.
Aluminum Tooling
Faster and lower-cost tooling, built for prototype and bridge production.
Right when: The design may still change, or volume doesn’t yet justify a steel tool investment.
Common parts: Prototype runs. Bridge production ahead of full launch.
Steel Tooling
Hardened tooling built to hold up through high cycle counts.
Right when: The design is locked and volume justifies the tooling investment.
Common parts: High-volume production parts.
Insert Molding
Plastic is molded directly around a pre-placed metal or component insert.
Right when: The part needs a threaded boss, electrical contact, or structural insert built in during molding rather than assembled after.
Common parts: Threaded bosses. Electrical contacts. Hybrid metal-plastic parts.
Overmolding
A second material, often a soft-touch elastomer, is molded over a rigid substrate.
Right when: The part needs a soft-touch grip, seal, or two-material function in one piece.
Common parts: Handles. Grips. Seals. Multi-durometer parts.
Liquid Silicone Rubber (LSR)
A silicone-specific molding process for flexible parts that hold up under heat and chemical exposure.
Right when: The part needs to flex, seal, or survive conditions standard thermoplastics can’t.
Common parts: Seals. Gaskets. Medical-grade silicone components.
Compression Molding
Material is placed in an open mold and compressed under heat and pressure.
Right when: The part uses a thermoset material or a geometry that doesn’t suit injection.
Common parts: Large or thick-walled parts. Certain rubber and composite components.
Specifications
These are our standard parameters. If your part falls outside them, send the drawings anyway. The jobs other suppliers turn down are often the ones we do best.
- Tooling types
- Aluminum molds (prototype + bridge production) · Steel molds (production volumes)
- Capabilities
- Insert molding · Multi-cavity tooling · Light assembly · Family molds, LSR (Liquid Silicone Rubber), Compression Molding, Overmolding, + More
- Post-processing
- Painting · Pad printing · Assembly · Secondary operations
- Materials
- Most thermoplastics, including ABS, Nylon, Polycarbonate, PEEK, POM (Delrin), and TPE/TPU
- Volume range
- Prototype quantities through high-volume production
- File formats
- STEP, IGES, native CAD, 2D prints
- Quote turnaround
- Within 24 hours · Tooling lead time confirmed at quoting
- Quality
- ISO 9001:2015 · Engineer review before tooling · Inspection before shipment
Most molding problems are design problems. We find them before the tool does.
Trusted Across Critical Industries
Precision and reliability aren’t optional in these industries. Neither is our commitment to both.
What Our Customers Say
“Anali is the most reliable and fast representative I’ve ever worked with. She is a huge factor in why I keep going to PE for work. I know I can trust her quotes and lead times, and she works with me through the whole process.”
Brian J. · Procurement Manager
“The parts arrived on time, on spec, and with the kind of oversight that makes it easier to come back on the next project.”
Procurement Manager Industrial Equipment Manufacturer
Bryn is amazing; you could clone him.
Paul · Sr. Project Engineer
Common questions about injection molding
A few things engineers ask before moving a part into tooling.
Both. The vendor network supports aluminum and steel tooling, insert molding, and a clear path from bridge production into full-volume manufacturing once a design is ready to scale.
Engineer review checks wall thickness uniformity, draft angles, and rib and boss placement against the design intent, since those are the most common causes of cosmetic and dimensional defects in molded parts.
They’re cost drivers, not automatic disqualifiers. We flag them early so you know what they add to tooling complexity and cost before quoting, instead of finding out after the first shots come off the press.
Injection molding earns its tooling cost back at mid- to high-volume, repeatable production. Lower volumes or active design iteration usually stay better served by 3D printing until the design is stable enough to commit to a mold.
Capability and tolerance claims come from a vendor network we’ve vetted in person, not a database of capacity. One contact manages tooling, molding, and finishing together instead of you coordinating separate vendors for each step.
Send us your files.
A real person will contact you within 24 hours.
ISO 9001:2015 · ITAR Registered · Mechanical + electrical programs coordinated together.
