Hardware Startups with Fexingo: Devices, Robotics, and Manufacturing Tech Companies

Episode 104 of Hardware Startups with Fexingo dives into snap-fit design—a technique that eliminates screws, adhesives, and fasteners from product assembly. Lucas and Luna explore how a smart-lock startup cut assembly time by 40% by switching to a cantilever snap joint for its outer casing. They break down the tradeoffs: snap-fits reduce BOM cost and speed up production, but they create stress con...

In this episode of Hardware Startups with Fexingo, Lucas and Luna dive into stereolithography (SLA) — the 3D printing technology that gives hardware startups sub-50-micron accuracy for tight-tolerance prototypes. They break down when SLA beats selective laser sintering, how startups like Formlabs and Carbon made it accessible, and why a $3,000 desktop SLA printer can save months of CNC iteration....

Episode 102 of Hardware Startups with Fexingo dives into overmolding—the process of encapsulating electronics in a durable plastic shell. Lucas and Luna break down why startups like those building outdoor sensors and wearable medical devices are turning to overmolding for waterproofing, drop protection, and lower assembly costs. They walk through a real-world case: a soil-monitoring startup that c...

This episode of Hardware Startups with Fexingo dives into why planetary gearboxes are the unsung heroes of robotics and motion control. Lucas and Luna break down how a single $8 gearbox from a Shenzhen supplier turned a garage-built robotic arm into a production-ready product, and why torque density matters more than raw speed. They cover the trade-offs between spur gears, harmonic drives, and pla...

Episode 100 of Hardware Startups with Fexingo. Lucas and Luna dive into electrostatic discharge flooring — a low-tech but critical element in hardware prototyping labs. They explain why a startup that lost a batch of custom ASICs traced the problem to an ungrounded workbench, how ESD flooring works at the material level (conductive PVC vs. dissipative rubber), and what a founder needs to know befo...

In episode 99, Lucas and Luna explore accelerated life testing (ALT) for hardware startups. ALT compresses years of wear into weeks using heat, humidity, and voltage, predicting failure rates before shipping. The hosts walk through a real case: a small robotics startup that tested motors in an 85-degree Celsius chamber for 3000 hours, catching a bearing defect that would have caused 12% field fail...

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how hardware startups are using industrial-grade vibration shakers—the same type NASA uses for payload qualification—to test prototype durability before shipping. Lucas explains that a typical multi-axis shaker system costs $50,000 to $150,000, but many startups now access them through shared test labs or rental services for...

In this episode of Hardware Startups with Fexingo, Lucas and Luna explore how hardware startups use thermal cycling chambers to accelerate product reliability testing. They dive into the story of a smart thermostat startup that caught a solder joint failure before shipping 10,000 units, saving roughly $200,000 in field replacements. The hosts explain the difference between thermal cycling and ther...

In Episode 96 of Hardware Startups with Fexingo, hosts Lucas and Luna dive into automated optical bonding — the process of gluing a display to a touch panel or cover glass using UV-curable liquid optically clear adhesive (LOCA). They explain why this matters for startups building rugged or outdoor devices: optical bonding eliminates the air gap, dramatically improving sunlight readability, reducin...

In episode 95 of Hardware Startups with Fexingo, Lucas and Luna explore how a simple return from a field failure can become a goldmine of design data. They walk through a real-world case: a smart-lock startup that analyzed a seized motor in a returned unit, discovered a lubrication spec mismatch, and fixed it before scaling to 50,000 units. Lucas explains the closed-loop process of failure analysi...

In episode 94 of Hardware Startups with Fexingo, Lucas and Luna dive into the overlooked but critical step of PCB depaneling — separating individual boards from a manufacturing panel. They explain why routing and V-scoring are the two main methods, how startups often damage boards with improper depaneling, and the surprising cost of a bad edge finish. The hosts walk through a real example of a sen...

Episode 93 of Hardware Startups with Fexingo dives into Highly Accelerated Life Testing (HALT) — a stress-test method that pushes prototypes far beyond normal operating limits to uncover design weaknesses before they become field failures. Lucas and Luna walk through a real example: a consumer electronics startup that discovered a brittle solder joint on a power regulator during HALT, saving hundr...

In this episode, Lucas and Luna explore how hardware startups are using laser marking to add permanent traceability to their products—from PCBs to enclosures. They dive into a real-world case: a medical device startup that avoided a costly recall by tracing a defective batch back to a single supplier's lot using a 2D Data Matrix code laser-etched onto each unit. The hosts break down the different...

In episode 91 of Hardware Startups with Fexingo, Lucas and Luna explore conformal coating — the thin protective layer that shields circuit boards from moisture, dust, and corrosion. They walk through a real example: a drone startup that lost 12% of field units to condensation before applying acrylic coating. Lucas explains the three main types (acrylic, urethane, silicone) and when to choose each,...

In this episode, Lucas and Luna explore scanning acoustic microscopy (SAM), a non-destructive testing method that hardware startups can use to detect delamination, cracks, and voids inside sealed components. Lucas explains how SAM uses high-frequency ultrasound to image internal structures—similar to an ultrasound for electronics—and why it caught on in the automotive industry after a 2018 Toyota...

Lucas and Luna dive into a failure mode most hardware startups overlook: shipping vibration. They break down how a single pallet in transit can generate acceleration spikes that snap unsupported capacitors and crack solder joints on connectors. Using a real example from a medical wearable startup that lost 18% of its first production batch to transport damage, they walk through the physics of rand...

In episode 88, Lucas and Luna explore selective laser sintering (SLS) — and why it's becoming the go-to additive manufacturing process for hardware startups that need functional, durable prototypes without the brittleness of FDM. They dive into the material science: nylon-based powders, the 170-degree Celsius preheat chamber, and why SLS parts don't have the weak layer adhesion that plagues fused...

Lucas and Luna unpack Design for Test (DFT) — the engineering discipline that builds testability into hardware before the first prototype is made. They walk through a concrete case: a medical-device startup that embedded JTAG test points, boundary-scan cells, and test-access ports into its PCB layout from revision zero. The result? They caught 94 percent of soldering defects during first-article i...

In episode 86 of Hardware Startups with Fexingo, Lucas and Luna dive into Design for Assembly (DFA) — the discipline of designing a product so it can be assembled quickly, reliably, and cheaply. They break down the real-world impact using the example of a smart thermostat startup that cut assembly time by 40 percent simply by redesigning a single bracket. Lucas explains the Boothroyd-Dewhurst meth...

This episode of Hardware Startups with Fexingo dives into solder paste inspection (SPI) systems—a critical quality gate before reflow. Lucas and Luna explore why SPI matters for yield and rework costs, using a real-world example where a startup cut defect rates by 40 percent after implementing inline SPI. They discuss key metrics like volume, area, height, and bridge detection, and how SPI data fe...

In this episode of Hardware Startups with Fexingo, Lucas and Luna dive into the world of potting compounds — the epoxy and silicone resins used to encapsulate sensitive electronics. They explain why startups turn to potting instead of conformal coating, the trade-offs in repairability and thermal management, and a real-world case where a drone startup avoided field failures by switching to a polyu...

Episode 83 of Hardware Startups with Fexingo dives into the critical role of automated X-ray inspection (AXI) for detecting hidden solder defects in complex PCBs. Lucas and Luna explore how startups like a Bay Area electric skateboard company caught cold solder joints on ball grid arrays that would have caused field failures. They explain the physics behind X-ray imaging, the difference between 2D...

Lucas and Luna explore why hardware startups should consider selective laser melting (SLM) for early-stage prototyping and low-volume production, using the example of a drone frame startup that cut lead time from six weeks to five days. They walk through the specific benefits: the ability to iterate without tooling, the cost break-even point at around 500 units, and the material properties of 316L...

Lucas and Luna explore how hardware startups leverage pick-and-place machines to accelerate prototyping and small-batch production. They examine the trade-offs between manual assembly and automated pick-and-place, the role of feeder setups and nozzle changers, and how a machine like the Yamaha YS100 can place over 100,000 components per hour. The hosts discuss real-world decisions startups face wh...

In episode 80 of Hardware Startups with Fexingo, Lucas and Luna drill into the unsung hero of PCB assembly: the solder paste stencil. They explain how a laser-cut stainless steel sheet, just one hundred fifty microns thick, determines whether a prototype works on first power-up or ends up in the rework pile. The conversation centers on a specific case: a medical-device startup that reduced tombsto...