Episodes

  • Hardware Startups Should Use HALT Testing Early

    Hardware Startups Should Use HALT Testing Early
    Jul 5 2026
    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 hundreds of thousands in warranty costs. They explain the difference between HALT and standard reliability testing, how startups can access HALT chambers through shared labs or service bureaus, and why finding failures fast actually speeds up time-to-market. If you're building hardware and want to avoid expensive recalls, this episode shows you how HALT turns failure into a design tool. #HardwareStartups #HALT #HighlyAcceleratedLifeTesting #ReliabilityTesting #ProductDesign #DesignForReliability #PrototypeTesting #FailureAnalysis #StressTesting #StartupEngineering #Manufacturing #QualityAssurance #ThermalTesting #VibrationTesting #WarrantyCosts #BusinessAndTechnology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    11 mins
  • How Hardware Startups Use Laser Marking for Traceability

    How Hardware Startups Use Laser Marking for Traceability
    Jul 5 2026
    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 laser types—fiber, CO2, and UV—and when each makes sense for a startup budget. They also discuss the trade-off between speed and depth, the importance of designing for marking from day one, and how to avoid common pitfalls like heat-affected zones on sensitive components. Specific numbers: the cost of adding laser marking in-house versus outsourcing, and the time savings during assembly verification. A practical episode for any hardware founder thinking about serialization, warranty tracking, or regulatory compliance. #LaserMarking #Traceability #HardwareStartups #MedicalDevice #PCBA #Serialization #2DDataMatrix #FiberLaser #CO2Laser #UVLaser #DesignForMarking #QualityControl #RecoveryAvoidance #AssemblyVerification #BusinessAndTechnology #HardwareEngineering #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    8 mins
  • How Hardware Startups Use Conformal Coating for Circuit Protection

    How Hardware Startups Use Conformal Coating for Circuit Protection
    Jul 4 2026
    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, plus common application methods from manual spraying to selective robotic coating. Luna raises the gotcha: coating can trap heat and complicate rework. Listeners learn one specific decision rule — if your device operates in a high-humidity environment or sees thermal cycling, conformal coating is likely worth the 2-5% BOM cost increase. The episode closes with a practical tip on combining coating with potting for maximum protection. No fluff, just the engineering trade-offs every hardware founder should know. #ConformalCoating #CircuitProtection #HardwareStartups #PCBAssembly #DroneHardware #AcrylicCoating #UrethaneCoating #SiliconeCoating #SelectiveCoating #HumidityProtection #CorrosionPrevention #Rework #ThermalManagement #ManufacturingTech #Electronics #Business #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    8 mins
  • How Hardware Startups Use Acoustic Microscopy for Hidden Defects

    How Hardware Startups Use Acoustic Microscopy for Hidden Defects
    Jul 4 2026
    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 recall linked to cracked solder joints in engine control units. They walk through a real example: a startup making waterproof smartwatches found micro-delamination in their potting compound using SAM, saving six figures in field failures. Lucas breaks down the basics: scanning modes like A-scan, B-scan, and C-scan, and how startups can access SAM through service labs like Sonoscan or Nordson for roughly $200–$500 per sample. Luna asks about the learning curve and whether SAM is worth the cost for a team doing fewer than 100 units a month. The episode closes with a practical takeaway: for any product that will be potted, encapsulated, or bonded, get at least one SAM scan on your first production batch. Also includes a low-key listener-support segment. #HardwareStartups #AcousticMicroscopy #NonDestructiveTesting #SAM #UltrasoundTesting #Delamination #PottingCompounds #ElectronicsManufacturing #QualityControl #ManufacturingTech #HardwarePrototyping #StartupTools #HiddenDefects #ReliabilityTesting #Sonoscan #Nordson #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
  • How Hardware Startups Use Vibration Testing to Survive Shipping

    How Hardware Startups Use Vibration Testing to Survive Shipping
    Jul 3 2026
    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 random vibration profiles, the difference between sinusoidal and random testing, and why a $2,000 slip-table test during prototyping can save tens of thousands in field failures. They also cover practical design mitigations: conformal coating on high-mass parts, staking connectors with room-temperature vulcanizing silicone, and avoiding cantilevered PCB mounting in favor of four-point supports. No hype, just the numbers and fixes that turn a fragile prototype into a shippable product. #HardwareStartups #VibrationTesting #ShippingDamage #MedicalWearable #RandomVibration #SinusoidalVibration #ConformalCoating #Staking #RTVSilicone #CantileveredPCB #FourPointMount #SolderJointCrack #CapacitorSnapOff #SlipTable #DesignForReliability #ProductShipping #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    7 mins
  • How Hardware Startups Use Selective Laser Sintering for Production-Ready Prototypes

    How Hardware Startups Use Selective Laser Sintering for Production-Ready Prototypes
    Jul 3 2026
    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 deposition modeling. Lucas walks through a real case — a medical device startup that used SLS to iterate 12 versions of a surgical tool handle in three weeks, saving six figures in tooling costs. Luna asks the tough question: when does SLS stop making sense? They discuss the trade-off between SLS and injection molding at around 1,000 units, and why the powder handling and post-processing steps catch first-timers off guard. Plus, the hosts offer practical advice on service bureaus versus in-house machines — and why a Formlabs Fuse 1 or Sinterit Lisa might pay for itself faster than you think. If you're building hardware and tired of fragile prototypes, this episode spells out exactly when SLS earns its place on your bench. #SelectiveLaserSintering #SLS #AdditiveManufacturing #HardwareStartups #RapidPrototyping #NylonPowder #FunctionalPrototypes #Formlabs #Sinterit #DFM #ProductionReady #MedicalDevice #LowVolumeProduction #Business #Technology #FexingoBusiness #BusinessPodcast #ManufacturingTech Keep every episode free: buymeacoffee.com/fexingo
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    8 mins
  • Why Hardware Startups Should Use Design for Test from Day One

    Why Hardware Startups Should Use Design for Test from Day One
    Jul 2 2026
    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 inspection, not in the field. Lucas explains how DFT cuts debug time from weeks to hours, slashes re-spin costs, and why skipping it is the single most expensive shortcut a hardware startup can take. Luna pushes back on the added board space and upfront engineering hours — and Lucas shows how the math flips by production run 500. They also touch on the open-source boundary-scan tool OpenOCD and why venture-backed founders who ignore DFT are burning their own cap table. A focused episode for anyone building physical products who wants to ship faster without the field-failure nightmare. #DesignForTest #DFT #HardwareStartups #HardwareEngineering #PCBLayout #BoundaryScan #JTAG #TestAccessPort #OpenOCD #MedicalDevice #Manufacturing #YieldImprovement #DefectDetection #FirstArticleInspection #ProductDevelopment #Business #Technology #FexingoBusiness Keep every episode free: buymeacoffee.com/fexingo
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    13 mins
  • Why Hardware Startups Need Design for Assembly from Day One

    Why Hardware Startups Need Design for Assembly from Day One
    Jul 2 2026
    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 methodology, why DFA forces you to integrate a manufacturing engineer into the design process from the start, and how a simple part-count reduction can slash both unit cost and defect rates. Luna pushes back on the founder instinct to 'get it working first, then worry about manufacturing' — and they explore why so many hardware startups end up with six-figure change orders because they skipped DFA. This episode is packed with specific numbers, a concrete case, and practical advice for any hardware founder who wants to avoid the prototyping-to-production trap. #DesignForAssembly #DFA #HardwareStartups #Manufacturing #BoothroydDewhurst #PartCountReduction #AssemblyTime #ProductionCost #HardwareEngineering #Prototyping #SmartThermostat #UnitEconomics #Business #Technology #FexingoBusiness #BusinessPodcast #StartupLessons #MechanicalDesign Keep every episode free: buymeacoffee.com/fexingo
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    11 mins