Introduction to Design for Assembly in Medical Plastic Parts Every extra screw, bond, or alignment step in a medical device adds cost, time, and risk. Design for Assembly (DFA) in Medical Plastic Parts is about eliminating those steps before they exist — not fixing them after tooling. In medical plastic components, where devices are shrinking…

Introduction to Eliminating Flash in Micro Injection Molding In micro molding, flash isn’t just cosmetic, it can be catastrophic. When features measure in tenths of a millimeter, even a few microns of overflow can jam assemblies, short out circuits, or block optical paths. So how does one approach eliminating flash in micro injection molding?It starts…

Introduction to tight tolerances and plastic parts Every engineer eventually asks the same question: “How tight can we hold this?” Tightest tolerances achievable in injection molding can reach impressive precision, but tolerance is never just about the mold. It’s the combined result of material behavior, tooling accuracy, process control, and design geometry. In other words…

Introduction to Minimum Draft Angle for Micro-Molded Parts When features drop below a millimeter, draft becomes the difference between a clean release and a torn edge. The question, “What’s the minimum draft angle for micro-molded parts?” doesn’t have a single number—it depends on resin, surface finish, texture, depth, and ejection method. Below are practical ranges…

Introduction to Minimum Feature Sizes in Injection Molding Engineers love to ask: How small can we make it?When talking about minimum feature sizes in injection molding, the question isn’t just about tool precision — it’s about flow, cooling, and stability. Every micron you shave from a feature comes with consequences for manufacturability and yield. For…

Introduction — The Unexpected Truth About Tolerance Stack-Up for Plastic Assemblies Every engineer learns to calculate tolerance stack-up for plastic assemblies. Few stop to ask if they really need to.The easiest way to solve a stack-up problem? Redesign your assembly so you don’t have one. In many medical plastic components, the root cause of stack-up…

Intro – Thermoplastic Materials for Catheter Handles Catheter handles are small, complex assemblies that do big jobs — guiding, actuating, and sealing precision components during critical procedures. The material behind that handle determines not only how it feels in a clinician’s hand, but how it performs through sterilization, assembly, and use. Selecting the right thermoplastic…

How thin can you go for plastic injection moldable wall thicknesses When you’re designing injection-molded parts for medical devices, wall thickness isn’t just about weight — it’s about flow, consistency, and reliability. Engineers constantly ask: “How thin can we mold this?” This article dives deeper into the Thinnest Moldable Wall Sections for Medical Plastic Components.…

Just how small can an overmolded feature really be? In medical device design, overmolding enables smaller, cleaner, and easier-to-assemble parts. Handles with built-in seals, strain reliefs that don’t need adhesives, and catheter components that eliminate manual assembly steps.But as clinical demands push devices to become smaller and more integrated, one question naturally arises: what’s the…

Why Injection Molding Matters for Startups For early-stage medical device companies, the biggest leap isn’t from idea to CAD — it’s from CAD to something that can actually be manufactured. Injection molding for medical device startups bridges that gap, offering scalable, repeatable, and regulatory-compliant production for plastic components and assemblies. But for startups, molding can…

Intro to Contract Engineering for Medical Devices Developing a medical device takes more than an idea — it takes parts that can actually be made, assembled, and validated. For small and mid-sized medical companies, contract engineering for medical devices offers access to experienced design and manufacturing expertise without the overhead of an in-house plastics team.…

Why IEC 60601 Usability Standards Matter When designing medical devices, regulatory compliance is more than a checkbox—it’s a safeguard. IEC 60601-1-6 and IEC 62366-1 (the usability portions of the broader IEC 60601 family) ensure that your device is designed with the user and context in mind. And when it comes to catheter systems, the handle…