HomeInjection MoldingEngineeringPackaging & FulfillmentGalleryFAQAbout Get a Quote
Frequently Asked Questions

Everything You Want to Know

New to injection molding? We make it easy. Find answers to the most common questions about our processes, pricing, materials, and services.

Categories
Still have questions?
Ask Us (909) 381-4700

Getting Started

Injection molding is the best choice when you need 1,000 or more identical plastic parts. For smaller quantities or early-stage design validation, we recommend starting with 3D printing (FDM or SLA). Once your design is validated, we transition to injection molding for cost-effective, consistent production. If you're not sure, just send us your project details — we'll give you an honest recommendation at no charge.

The more you can share, the better — but we can work with almost anything: a 3D CAD file (.STEP, .SolidWorks, .STL), a drawing, a sketch, a reference part, or even just a description. We'll review what you have and ask the right questions. Key info: approximate quantity per order, target per-unit cost, material requirements, color, and any critical dimensions or tolerances.

Rapid prototypes (3D printed): 24–48 hours. Prototype tooling (aluminum mold): 1–2 weeks. Production tooling (steel mold): 3–6 weeks depending on complexity. Once tooling is complete and approved, production runs can start immediately. Rush tooling and expedited shipping are available.

Yes, absolutely. We routinely sign Non-Disclosure Agreements before reviewing any proprietary designs or project details. Protecting your intellectual property is a priority. We can also provide guidance on patent documentation if needed.

Materials

We work with virtually all common thermoplastics, including: ABS (Acrylonitrile Butadiene Styrene), PP (Polypropylene), PC (Polycarbonate), Nylon (PA6, PA66), HDPE, LDPE, POM (Delrin/Acetal), PETG, TPE, TPU, PVC, and more. We also offer glass-filled and flame-retardant grades. If you have a specific material requirement (FDA, UL, RoHS), let us know — we'll source the right grade.

Yes. We blend masterbatch colorants in-house and can match any Pantone or RAL color. We also offer custom color matching from a physical sample. Note that color consistency requires consistent material and process conditions — we maintain strict process controls to ensure batch-to-batch color accuracy.

For clear parts, we use Polycarbonate (PC), PETG, or acrylic (PMMA). PC is the most durable and offers excellent optical clarity. PETG is FDA-compliant and cost-effective for food/beverage applications. All clear materials require highly polished mold surfaces (A1–A2 SPI finish) for optical quality results.

Material selection depends on your part's requirements: mechanical strength, temperature exposure, chemical resistance, flexibility, UV resistance, regulatory compliance (FDA, UL), and cost. Our engineers will review your application and recommend the best material — or a shortlist to evaluate. We can print test pieces in multiple materials for comparison.

Injection Molding Process

Plastic resin pellets are fed into a heated barrel where they melt. The molten plastic is injected under high pressure into a closed mold. The plastic cools and solidifies in the mold cavity, then the mold opens and ejector pins push the finished part out. The cycle repeats — typically every 15–60 seconds. Molds can have 1 to 32+ cavities, multiplying output per cycle.

DFM analysis reviews your part design for features that could cause molding problems: undercuts (require side actions), thin walls (flow issues), thick walls (sink marks, long cycle times), sharp inside corners (stress concentrations), insufficient draft angles (parts stick in mold), and weld line locations. We provide a DFM report before building any tooling — saving time and money.

Standard tolerances are ±0.010 inches (±0.25mm) for most features. Tight tolerances of ±0.005 inches (±0.127mm) are achievable with proper tooling and process control. For critical features, we can achieve ±0.002 inches (±0.05mm) with specialized tooling. Note that material shrinkage must be accounted for in the mold design.

For production injection molding, the typical MOQ is 1,000 units — though we evaluate each project individually. For prototyping and design validation, there is no minimum — we can produce one 3D printed part. Very low-volume injection molding (100–500 pieces) is possible with aluminum prototype tooling at higher per-unit cost.

Tooling & Molds

Yes. When you pay for tooling, the mold belongs to you. We store your mold in our facility at no charge during your production run. If you decide to move your production elsewhere, you can take your mold with you. We build molds to last — production steel molds are rated for 500,000 to 1,000,000+ cycles.

We build: Single-cavity prototype molds (aluminum, for short runs), multi-cavity production molds (P20 steel, for high volume), family molds (multiple different parts in one tool), insert molds (metal inserts molded in place), over-molds (two-shot or substrate over-mold), and hot-runner molds (no sprue waste, high-speed cycling). We also offer offshore tooling at reduced cost for large molds.

Mold cost depends on part complexity, number of cavities, material, and mold life requirement. Simple single-cavity aluminum molds can start around $1,500–$5,000. Complex multi-cavity steel production molds can range from $8,000 to $50,000+. The mold cost is a one-time investment — it is amortized over your production volume, and the per-part cost decreases rapidly at higher quantities.

Yes. We perform mold maintenance, repair, and modification on existing tooling — even molds built elsewhere. Common services include: ejector pin replacement, cavity polishing, gate modification, steel welding and re-machining, cooling channel cleaning, and mold base repair. Contact us with details of your existing tool.

Packaging & Shipping

Yes — this is a core service. We offer product sub-assembly (simple to complex 20–30 step lines), poly-bag packing, retail box assembly, blister/clamshell packaging, UPC label printing and application, precision parts counting, kitting and bundling, and custom display packaging. We build custom fixtures and assembly jigs to ensure accuracy at speed.

Yes. Our drop-ship program ships finished, branded goods directly to your customers, Amazon FBA warehouses, retail stores, or distributors — anywhere in the world. We hold your inventory in our 160-pallet storage facility. You send us orders; we pick, pack, and ship. This eliminates the need for you to manage inventory or fulfillment in-house.

We ship via UPS, USPS Priority Mail, FedEx, DHL, local delivery, truck freight (LTL and FTL), and ocean freight for international bulk orders. We work with your preferred carrier or choose the most cost-effective option for your shipment. Tracking information is provided for all shipments.

Yes. We offer mold and finished product storage. Our warehouse has 160-pallet capacity for finished goods. We store your molds at no charge during active production. Long-term mold storage fees may apply for inactive tools. Contact us for current storage availability and rates.

Pricing & Business

Part cost depends on material weight, mold yield (cavities), and cycle time. Very small parts in high-yield molds can cost as little as $0.01–$0.05 each at high volume. Typical consumer product parts range from $0.10 to $2.00 per piece. Larger, more complex structural parts may run $2–$20+. We provide detailed, transparent pricing with your quote — including tooling amortization scenarios.

We do not currently offer financing or joint-venture funding arrangements. However, we work hard to minimize your upfront tooling investment — and low-cost aluminum prototype tooling lets you validate your design before committing to a full steel production tool.

Absolutely — in fact, working with first-time clients is something we enjoy. We guide new product developers through material selection, design considerations, tooling options, production planning, and fulfillment setup. No question is too basic. Read our FAQ thoroughly and then call or email us — we're happy to talk through your project.

We are located at 236 W. Orange Show Lane, San Bernardino, CA 92408. We are within a few miles of six major Southern California freeways (I-10, I-215, Hwy 60, Hwy 210, I-15, and I-8 corridor connections) and approximately 15 miles east of Ontario International Airport (ONT). We serve clients across the US and ship worldwide.

Materials Reference

Common Thermoplastics At a Glance

Material Abbr. Melt Temp Key Properties Common Uses
Acrylonitrile Butadiene Styrene ABS 392–482°F Impact resistant, good surface finish, easy to process Electronics housings, consumer goods, automotive trim
Polypropylene PP 340–410°F Lightweight, fatigue resistant, living hinges, FDA available Containers, hinges, packaging, automotive
Polycarbonate PC 525–575°F Crystal clear, very high impact, dimensional stability Lenses, guards, medical enclosures, lighting
Nylon (Polyamide) PA6/66 450–520°F High strength, excellent wear & chemical resistance Gears, bearings, structural brackets, fasteners
High-Density Polyethylene HDPE 380–450°F Chemical resistant, FDA compliant, cost effective Bottles, containers, pipe fittings, food contact
Thermoplastic Elastomer TPE/TPU 360–420°F Flexible, rubber-like, over-moldable, recyclable Grips, seals, gaskets, wearables, overmolds
Polyethylene Terephthalate Glycol PETG 420–480°F Clear, tough, food-safe, easy to print/mold Packaging, displays, medical, food containers
Polyoxymethylene (Acetal) POM 360–410°F Low friction, high stiffness, excellent fatigue life Precision gears, bushings, conveyor components

Question Not Answered Here?

Call us at (909) 381-4700 or send a message. We respond to all inquiries within 24 hours.

Send a Message (909) 381-4700