Action Cameras & Gimbals

Action Cameras & Gimbals Elastollan 1195A Injection Molding with Engel Victory 120

As a manufacturing engineer tasked with bringing the next generation of ruggedized electronics to market, you operate at the unforgiving intersection of extreme performance and mass production. For designers of Action Cameras & Gimbals, the list of non-negotiable requirements is brutal. Your product must survive a fall from a mountain bike, a plunge into the ocean, and the fine dust of a desert rally, all while maintaining flawless functionality. The engineering challenge is immense, translating directly into a manufacturing nightmare. The housings, seals, and protective overmolds that define these devices are not just aesthetic shells; they are mission-critical structural components where a single microscopic flaw can lead to catastrophic failure, a warranty claim, and a damaged brand reputation.

The core pain point lies in achieving perfect, repeatable sealing and impact resistance. You're not just molding a plastic box; you're creating a precision-engineered pressure vessel designed to protect sensitive optics and electronics. Traditional manufacturing approaches often involve multi-stage processes: molding a base component, then CNC machining critical sealing grooves or features, followed by manual deburring and inspection. This workflow is a minefield of potential defects. Each step introduces another opportunity for tolerance stack-up, tool marks that create stress risers, or microscopic burrs that compromise an IP-rated seal. This is where a holistic, first-principles approach to manufacturing becomes not just an advantage, but a necessity. The solution lies in selecting a material-process-machine triad that is purpose-built to solve these challenges in a single, net-shape operation. This is precisely what we have engineered with our specialized process combining BASF Elastollan 1195A, a high-performance thermoplastic polyurethane (TPU), with the unparalleled precision of the Engel Victory 120 injection molding machine.

Forging Compliance: A Process-First Approach to IP68 and MIL-STD-810G

Compliance is not achieved through post-production testing; it's engineered into the part from the first gram of molten polymer. Our process is fundamentally designed to meet and exceed the stringent demands of IP68 and MIL-STD-810G standards.

IP68 (Ingress Protection): The Battle Against Porosity The IP68 rating, signifying total protection against dust ingress and long-term immersion in water under pressure, is entirely dependent on the quality of your sealing surfaces. For a complex action camera housing with integrated buttons, lens ports, and battery doors, this means creating flawless, void-free gasket channels and mating surfaces. Elastollan 1195A, with its 95A Shore hardness and excellent chemical resistance, is an ideal material for this, but it presents a significant processing challenge: it is a high-viscosity, hygroscopic TPU.

"Hygroscopic" is a critical detail. The material readily absorbs atmospheric moisture. If this moisture isn't meticulously removed in a controlled drying process immediately before molding, it will turn to steam in the machine's barrel. This steam creates splay, silver streaks, and, most dangerously, microscopic porosity within the part structure. On a sealing surface, a single micropore is an open doorway for water under pressure. Our process control begins with state-of-the-art desiccant dryers and sealed material handling systems to ensure the resin is at its optimal, bone-dry state.

The second challenge is viscosity. Forcing this thick, honey-like molten polymer into every sub-millimeter detail of a complex mold requires immense, and more importantly, uniform pressure. This is where the Engel Victory 120's signature tie-bar-less design becomes the enabling technology. Traditional machines with four tie bars can suffer from minute platen deflection under high pressure, causing the clamping force to be concentrated around the bars and weaker in the center. This uneven pressure distribution is a primary cause of incomplete fills (short shots) and microscopic voids, especially in large or complex parts. The tie-bar-less C-frame design of the Victory 120 ensures that the 1200 kN of clamping force is distributed with absolute uniformity across the entire mold face. This forces the Elastollan 1195A into every sharp corner and thin-walled feature, creating a perfectly dense, non-porous component with pristine sealing surfaces right out of the mold.

MIL-STD-810G (Shock & Drop): Maximizing Inherent Material Strength The MIL-STD-810G standard for shock and vibration is a brutal test of a product's mechanical integrity. Elastollan 1195A is a TPU, a class of materials renowned for its exceptional impact strength and energy absorption. However, the material's datasheet properties are only achievable in a perfectly molded part. Internal stresses, weld lines, and voids created during a suboptimal molding process act as stress concentration points, becoming the predetermined failure points when the device is dropped.

Our process, centered on the all-electric precision and shot-to-shot consistency of the Engel Victory 120, mitigates these risks. The machine's advanced process controls allow for a precisely profiled injection speed and pressure, minimizing shear stress on the polymer chains and ensuring optimal weld line strength. The uniform clamping pressure prevents internal stresses from being locked into the part as it cools. The result is a component that exhibits the full, uncompromised toughness of the base resin. By achieving this net-shape component in a single operation, we also completely eliminate the risk of introducing stress risers from secondary machining operations. A tool mark from a CNC end mill is a textbook stress concentrator, and it's a risk we have engineered out of the system entirely. The durability is molded in, not machined on.

Core Process & Machine Parameters

To achieve this level of performance, every parameter is meticulously controlled. The synergy between material properties and machine capability is what delivers a compliant part, every time.

Cost & Volume Dynamics: The TCO of Net-Shape Manufacturing

This advanced manufacturing strategy is optimized for production volumes between 1,000 and 20,000 units. This range represents the sweet spot where the significant investment in high-precision tooling and process setup is amortized, delivering a lower Total Cost of Ownership (TCO) compared to seemingly cheaper, multi-stage production methods. The logic is simple: we eliminate entire categories of cost and risk.

The primary economic driver is the complete circumvention of secondary machining. Consider the true cost of machining a sealing groove into a molded part. It's not just the CNC machine time. It's the cost of designing and building a secondary fixture, the programming time, the labor for loading and unloading, and the added quality control steps to inspect the machined feature. More critically, it's the cost of yield loss. A tiny burr left by a worn tool can compromise the IP68 seal, scrapping an otherwise perfect part. At MechanoFab, the sealing groove is a feature of the mold, not a post-processing step. It is formed perfectly, with a surface finish dictated by the polished steel of the tool, on every single cycle. This net-shape approach eradicates the possibility of machining defects, prevents tolerance stack-up, and ensures every part that comes out of the mold is a finished part.

The Engel Victory 120's tie-bar-less design contributes directly to this cost efficiency. It allows for the use of larger, more complex molds than would fit in a conventional 120-ton press. This can mean incorporating complex slide actions for undercuts or even building a family mold to produce multiple parts of an assembly in a single shot, drastically reducing cycle time and assembly costs. The precision of the all-electric drive system, with its sub-0.1% shot weight repeatability, means the process runs with minimal variation. This stability reduces the need for constant operator intervention and dramatically lowers the scrap rate, especially when processing a sensitive, hygroscopic material like Elastollan 1195A. When you factor in the reduced inspection overhead, the near-zero yield loss from machining errors, and the elimination of entire process steps, the economic case for this integrated, high-precision approach becomes undeniable for any serious production run.

Conclusion: Engineer-to-Engineer Partnership

Manufacturing components for extreme environments is a challenge of precision, control, and material science. By pairing the robust characteristics of Elastollan 1195A with the unique, uniform clamping pressure of the Engel Victory 120, we have created a production system that delivers MIL-STD-810G and IP68 compliance as an inherent property of the process. We eliminate the risks and costs of secondary operations, providing you with net-shape components that are ready for assembly. This is not just molding plastic; this is delivering certainty. Let's build your next ruggedized product right, the first time.