Glass is chemically inert, which is exactly why it's hard to bond well. Without the surface reactivity that metals and many plastics offer, a UV adhesive has to rely on mechanical interlocking at a microscopic scale and careful surface chemistry to form a durable joint — and skipping that groundwork is the single most common cause of long-term bond failure on glass. The Mechanics of UV Adhesion on Glass When a UV adhesive cures against glass, photoinitiators absorb light energy and trigger free radicals or cations that drive cross-linking throughout the resin. Some of that cross-linking occurs directly against the glass surface, forming true chemical bonds where compatible functional groups are present. The rest of the bond strength comes from mechanical interlocking — the cured polymer keying into microscopic surface irregularities. Because glass is smooth and chemically unreactive compared to a porous or oxidized metal surface, the balance between chemical bonding and mechanical interlocking tips heavily toward chemistry, which is why surface treatment before bonding matters more here than on almost any other substrate. Why Glass Bonding Is Genuinely Difficult Untreated glass has low surface energy and no native chemical groups for an adhesive to bond into directly. Combine that with glass's brittleness — a bond that shrinks too aggressively during cure can crack the substrate before it ever sees a service load — and it becomes clear why glass-bonding processes lean so heavily on preparation rather than adhesive chemistry alone. Surface Preparation Techniques Solvent cleaning with isopropyl alcohol removes oils, fingerprints, and dust — the essential first step, but rarely sufficient alone for demanding applications. Plasma and flame treatment raise the surface energy of the glass by adding polar functional groups to the surface, meaningfully improving wetting and adhesion without adding a separate chemical layer. Silane primers go further, creating an actual chemical bridge between the inorganic glass and the organic adhesive — the silane's mineral-reactive end bonds to the glass while its organic-reactive end cross-links into the cured resin, producing the strongest and most durable bond of the three approaches. If you're seeing inconsistent adhesion despite following your current cleaning procedure, Email Us — a silane primer step is often the missing variable. UV Adhesive Chemistries for Glass UV-curable acrylics cure fastest and offer good general-purpose adhesion and clarity. UV-curable epoxies (typically cationic-cure systems) offer superior long-term durability and lower shrinkage, trading some cure speed for those gains. UV-silicones bring flexibility and thermal stability across wide temperature ranges, well suited to glass bonded against a dissimilar-CTE substrate like metal. Incure's Uni-Weld™ UV Glass & Metal Bonder line spans several of these chemistries across a range of viscosities and cure speeds specifically for glass-to-metal and glass-to-glass joints. Curing: Wavelength, Intensity, and Dose LED sources have displaced mercury lamps in most new installations — they run cool, switch on instantly, tune to a specific matched wavelength, and last over 20,000 hours against roughly 1,000 for mercury bulbs. But wavelength match alone isn't sufficient: dose (intensity multiplied by exposure time) has…

The chemistry of a UV glue for glass is only half the story — the other half is the process that gets it from a dispensing valve to a fully cured, defect-free bond. Two lines running the exact same adhesive can see very different reject rates purely based on how the application sequence is set up. How UV Glue for Glass Works UV activated glue cures through photopolymerization: photoinitiators in the resin absorb energy from a specific light wavelength and trigger a chain reaction among monomers and oligomers, converting the liquid to a solid polymer in seconds. Because the reaction only starts on exposure to light, the glue can sit ready on a dispensing line indefinitely without curing prematurely, which is the property that makes a controlled, repeatable process possible in the first place. Advantages That Come From Controlling the Process A well-run UV bonding process delivers rapid cycle times (seconds rather than the hours a two-part epoxy needs), precise alignment because the adhesive stays liquid until light is applied, and a solvent-free, 100%-solids formulation that avoids VOC handling requirements. None of that is automatic, though — it depends on getting each process step right. Step 1: Surface Preparation Glass surfaces carry oils, fingerprints, and manufacturing residues that interfere with wetting. Clean with isopropyl alcohol or a dedicated glass cleaner as a baseline; for higher-load joints, a silane primer bridges the inorganic glass surface to the organic adhesive chemistry, measurably improving long-term adhesion under humidity or thermal cycling. Step 2: Dispensing Consistent bead volume and placement drive consistent bond-line thickness. Needle-tip dispensing in a single continuous bead, or a central drop for smaller parts, minimizes the trapped-air risk that comes with erratic dispensing patterns. Step 3: Alignment and Assembly Because the adhesive won't cure until exposed to light, technicians or automated fixtures have a genuine window to achieve precise part alignment — this is the practical payoff of cure-on-demand chemistry, and it's worth building fixturing that takes advantage of it rather than rushing this step to match a faster-curing adhesive's pace. Step 4: UV Exposure Dose — the combination of intensity and exposure time — determines cure quality. Under-curing leaves the bond line tacky and weak; over-curing can make some formulations brittle. A calibrated radiometer should verify actual output at the part surface, not just the lamp's rated spec, since output drifts over the life of both mercury and LED sources. Step 5: Quality Inspection Many industrial UV glues include a fluorescent tracer dye specifically so inspectors can verify full coverage under a black light — a fast, non-destructive way to catch missing bead sections or voids before the part moves further down the line. If your current process is seeing inconsistent cure results, Email Us and we can help isolate whether the issue is dose, dispensing, or surface preparation. Choosing Curing Equipment LED UV curing systems have become the industrial default: they switch on instantly, run over 20,000 hours versus roughly 1,000 for mercury bulbs, emit a narrow wavelength…

Glass doesn't forgive a slow adhesive. Any bond that shrinks too much while curing, or takes hours to reach handling strength, risks stress-cracking the substrate before it ever leaves the fixture. UV activated glass glue solves both problems by staying liquid indefinitely until light triggers the cure — giving assemblers full control over timing without sacrificing bond quality. What UV Activated Glass Glue Is UV activated glass glue is a resin that remains liquid until exposed to a specific ultraviolet wavelength. Unlike adhesives that dry through evaporation or cure through a two-part chemical reaction, it relies on photoinitiators: light energy triggers rapid polymerization, cross-linking monomers and oligomers into a solid polymer in seconds. That cure-on-demand behavior is the core reason it dominates high-volume glass assembly. A typical formulation has four components: oligomers that set the backbone properties (flexibility, chemical resistance), monomers that control viscosity and contribute to final strength, photoinitiators that start the reaction, and additives — stabilizers, colorants, or fillers — tuned to specific performance needs like heat resistance or long-term UV stability. Why It Suits Glass Specifically Optical clarity matters as much as strength for most glass applications. Because the cure involves no heat and no solvent evaporation, there's minimal bubbling, shrinkage, or yellowing — a real advantage for visible joints in glass enclosures, display cases, or architectural panels. The adhesive also solves the classic open-time tradeoff: it stays liquid indefinitely under ambient light, giving technicians time to align complex glass components precisely before triggering the cure with a UV lamp. Once triggered, full cure typically completes in 1 to 30 seconds, letting parts move immediately to handling, testing, or packaging rather than sitting in a work-in-progress queue. And because most formulations are 100% solids with no VOCs and no mixing step, there's less waste and less risk of operator error than with a two-part system. Selection Criteria for Glass Bonding Viscosity determines whether the glue wicks into a pre-assembled joint by capillary action (low viscosity) or holds its shape on a vertical surface and fills gaps between uneven glass faces (higher viscosity, gel-like consistency). Refractive index matters most for optical work — bonding lenses or fiber optics requires an adhesive index close to the glass itself, since a mismatch bends light at the interface and introduces distortion or signal loss. Coefficient of thermal expansion (CTE) compatibility is critical whenever glass is bonded to a dissimilar material like aluminum or stainless steel; the adhesive needs enough flexibility to absorb the differential expansion as temperature swings, a factor covered in more depth in how CTE mismatch causes adhesive bond failure. Environmental resistance — outdoor UV exposure, humidity, or chemical cleaners — may call for a formulation with built-in moisture resistance or a secondary heat-cure capability for added durability. If you're weighing viscosity against CTE compatibility for a mixed-substrate assembly, Email Us and we can help narrow the formulation. Industrial Applications Electronics manufacturers use UV glass glue for touchscreen-to-frame bonding, sensor sealing, and chip encapsulation, where low shrinkage prevents stressing…

A display that passes final inspection under factory lighting can still show a ring of trapped air or a faint rainbow pattern once it reaches a customer under different ambient light — and by then, the unit is already a field return instead of a line reject. Why LOCA Defects Often Surface Late Liquid Optical Clear Adhesive bonds are judged optically, not just mechanically, which means a defect can be present at assembly and only become visible once the display is viewed under the right lighting angle or after some time in service. Building a defect-diagnosis habit around the specific visual signature of each failure mode — rather than treating every complaint as "bad adhesive" — cuts inspection and rework time substantially. Newton's Rings and Trapped Air Concentric or irregular ring patterns under bright light almost always indicate a thin air gap remaining between two optically bonded layers, most commonly from incomplete vacuum evacuation before or during the lamination step. This differs from a true bubble defect in that it's not a discrete void but a graduated interference pattern, which means the fix is a process check — vacuum chamber seal integrity, dwell time, and adhesive dispense volume relative to the panel area — rather than a formulation change. Underfilling the dispense pattern relative to panel size is a common root cause, since the pattern must fully wet out to the edges once the layers are pressed together. Discrete Bubbles and Voids Round, isolated voids point to air entrainment during dispensing itself rather than lamination pressure. High-speed dispensing through a needle with a poor rheology match to the adhesive's viscosity whips air into the bead, and that air has nowhere to escape once the bead is compressed between rigid layers. Slowing dispense speed, switching to a jet-valve or auger-pump dispense method suited to the adhesive's viscosity band, and degassing the bulk material before it's loaded into the dispensing system are the three most effective fixes, roughly in that order of first-check priority. Edge Squeeze-Out and Delayed Creep Adhesive that looked contained at assembly but has crept past the display's visible edge weeks later is a bond-line thickness and dam-design problem, not a cure problem. Undersized damming relative to the dispensed volume, or a bond line that ended up thinner than specified because of excess press force, both leave adhesive with nowhere to go except outward over time as ambient temperature cycles the material through minor expansion and contraction. Confirming actual cured bond-line thickness against the datasheet spec — not just the wet dispense volume — during process qualification catches this before it becomes a warranty issue. Mura and Localized Optical Distortion A hazy, cloud-like distortion visible only under specific viewing angles, distinct from a discrete bubble, usually traces to a refractive-index mismatch that was within spec at room temperature but drifted once the display reached its operating temperature range, or to localized shrinkage stress from an uneven cure dose across the panel. Confirming that refractive index is validated across the…

A straight lightguide cures what it points at. When the bond face is a vertical wall, the underside of a flange, or the floor of a recessed cavity, pointing straight at it may mean bending the guide too hard, twisting a robot wrist into an awkward pose, or simply not reaching it at all. Q: How Do You Cure a Bond Face a Straight Lightguide Cannot Reach? A: Redirect the Beam at the Tip With a Terminator Instead of Moving the Part A lightguide terminator fits on the delivery end of the guide and turns the exiting UV beam to a new angle. Incure's LGT-Series™ terminators redirect output at 90° or 60° to the guide axis in Ø5mm and Ø8mm apertures. That lets the guide keep a relaxed, straight approach while the light leaves at the angle the bond needs. The alternative approaches, re-fixturing the part or forcing the guide into a tight bend, both carry costs that a terminator avoids. Why Not Just Bend the Guide? Every lightguide has a minimum bend radius, and exceeding it breaks glass fibers or kinks liquid guides, both permanently. A guide forced into a hook shape to point sideways at a wall is either at that limit or past it, and it is flexed again every time the fixture opens. Re-fixturing the part so the bond faces upward is the other common workaround, but it adds a handling step and, on multi-face parts, several of them. Redirecting at the tip addresses the geometry where the problem actually is. Choosing the Exit Angle The two angles serve different geometries: 90° (LGT-90-5, LGT-90-8): bond faces genuinely perpendicular to the approach direction, such as vertical housing walls, PCB edge joints, and connector side walls. 60° (LGT-60-5, LGT-60-8): recessed bond lines and angled cavities where surrounding fixture geometry prevents a full right angle, including the base of deep channels and enclosed housings. Sketch the approach axis and the bond face on the fixture drawing and measure the angle between them before choosing. If neither angle lines up with the face, the fixture design may need adjusting so one of them does. Email Us with the bond face's angle relative to your fixture's approach axis and your lightguide model, and Incure can confirm which terminator reaches it. Choosing the Aperture Aperture is first a compatibility question and only then a spot-size question. The terminator's aperture should match the core diameter of the guide feeding it; one wider than the guide's core does not gain usable spot size and only adds a transition at the tip. Once matched, the general pattern is that Ø5mm suits precision spot delivery on small, tightly defined joints, while Ø8mm trades some positional precision for a wider spot and more total UV energy on larger bond areas. The LGT-Series™ is built around Incure's LLG-1P-5 and LLG-1P-8 liquid lightguide cores, used with the S20™ UV arc spot lamp, and suits compatible fiber guide configurations on the L9000™ UV LED spot lamp. Setting Up an Angled…

A UV curing lamp is only as useful as the light delivery system that gets its output to the actual bond line, and in industrial settings that job usually falls to a lightguide — a precision optical component, not just a cable, engineered to transport high-intensity light with minimal loss and tight control over where it lands. What a Lightguide Actually Does A lightguide transports electromagnetic waves in the optical spectrum from a lamp or LED engine to a work surface, relying on total internal reflection: a core material with a higher refractive index than its surrounding cladding traps light inside the core, which bounces along the guide's length until exiting at the delivery end. Industrial lightguides are built for power delivery and durability in harsh manufacturing environments — a meaningfully different design target than the fiber optics used for data transmission. The Three Construction Types Liquid light guides (LLGs) use a polymer tube filled with a highly transparent liquid, sealed at both ends with polished glass or quartz windows. Their large, continuous core transmits more light energy than a comparable fiber bundle, delivers a uniform cross-section without the "honeycomb" effect fiber bundles can show, and covers UV-A, UV-B, and some UV-C wavelengths well. Incure's liquid light guides are built around this construction for arc lamp systems. Glass fiber optic lightguides bundle hundreds or thousands of individual glass fibers, configurable into multi-pole guides (one source, multiple outputs) or line-to-circle converters. They tolerate higher temperatures than liquid guides, resist degradation under sustained UV exposure better, and support tighter bend radii — useful in constrained equipment layouts. Incure's Cool Guide, Short Guide, and Long Guide lightguides for the L9000™ UV LED spot lamp are built on this fiber construction, sized for different reach and thermal requirements around the lamp head. Plastic optical fiber (POF) lightguides use polymer cores, which keeps them inexpensive and highly flexible, but limits them to visible-light applications — not suitable for high-power UV curing or high-temperature environments. Key Industrial Applications UV adhesive curing is the most common use for high-intensity lightguides: a lightguide lets an operator or robotic arm deliver a concentrated spot of UV energy onto a small bond line, curing the adhesive in seconds without heating surrounding components. Machine vision and inspection systems use lightguides to build ring lights and backlights that provide shadowless illumination for defect detection on parts moving at speed. Spectroscopy and analytical laboratories use high-purity quartz lightguides to transport deep UV wavelengths for spectral analysis where specific molecular signatures need to be identified. Email Us with your light source, target spot size, and working distance, and Incure can help match a lightguide construction and diameter to the application. Technical Parameters That Actually Matter Spectral transmission — every lightguide has a specific transmission curve, and using one not rated for your light source's wavelength causes rapid degradation of the guide along with poor process results. Numerical aperture (NA) — NA defines the guide's acceptance angle; a higher NA captures more light from the…

A pre-cut gasket has to be stocked, handled, and seated by hand or machine before it can seal anything. A form-in-place gasket skips all three steps — it's dispensed directly onto the part and cured in place, and when that cure happens in seconds under UV light instead of hours at room temperature, the whole sealing operation stops being a bottleneck. What Light-Curable FIPG Actually Is Form-in-place gaskets (FIPG) are liquid sealants dispensed directly onto a surface or into a groove, where they cure into a resilient elastomeric seal — no die-cutting, no separate part number, no manual seating. Light-curable FIPGs are a specific subset formulated with photoinitiators that respond to UV or visible wavelengths: exposure to a high-intensity light source drives rapid polymerization, turning the liquid into a solid elastomer in seconds rather than the hours a room-temperature-vulcanizing (RTV) sealant needs. Most formulations are built on silicone or acrylate chemistry. Acrylate systems bond aggressively to plastics and metals and cure fast; silicone systems trade some cure speed for superior thermal stability and flexibility across wide temperature swings. Both are engineered for a low compression set so the seal holds its shape and clamping force over the product's service life. Why FIPG Beats Die-Cut Gaskets and O-Rings Dispensing exactly the material a seal needs eliminates the inventory of stocked gasket shapes and the scrap that die-cutting generates. Because the bead is dispensed rather than molded, FIPG supports complex 3D patterns, variable thickness, and geometries a physical gasket simply can't replicate. Cure happens in seconds rather than the hours an RTV sealant needs, so parts move to the next station immediately. And because the seal forms directly on the substrate, it bonds intimately to the surface — removing the shifting or improper seating that causes leaks in manually installed O-rings. Where Light-Curable FIPG Gets Used Automotive electronics and EV components. Battery management systems, sensors, and ECUs need protection from moisture, dust, and vibration in harsh under-hood environments — FIPG delivers a fast, reliable seal for these enclosures. Consumer electronics. Smartphones, tablets, and wearables need IP67/IP68 water resistance from an ultra-thin gasket bead that doesn't add bulk, and the rapid cure supports the throughput these lines demand. Renewable energy equipment. Inverter housings and junction boxes on solar and wind installations need weatherproof seals that hold up through years of outdoor thermal cycling — a use case where FIPG's low-shrinkage, UV-stable chemistry has to tolerate the same CTE-mismatch stresses that cause bond failure in any dissimilar-material joint exposed to repeated heating and cooling. Aerospace and defense. Extreme pressure and temperature swings demand gaskets engineered for low outgassing and high chemical resistance to keep critical systems sealed. Dispensing and Curing Equipment Precision dispensing drives bead consistency, which drives seal quality. Needle valves suit low-to-medium viscosity materials and simple patterns; diaphragm valves handle high-speed, consistent-volume work; auger valves manage high-viscosity or filled materials; and jetting valves allow non-contact dispensing at very high speed for intricate electronic assemblies. Vision-guided robotic systems can track the part in…

A conformal coating that cures in seconds instead of hours doesn't just speed up one process step — it removes the drying racks and work-in-progress buffer that a slow cure forces onto a production floor. Light-curable conformal coatings deliver that speed while still meeting the moisture, chemical, and vibration resistance a printed circuit board needs in the field. What Light-Curable Conformal Coatings Are Conformal coatings are thin polymeric films applied to PCBs to shield components and circuitry from moisture, dust, chemicals, temperature extremes, and mechanical vibration. Traditional solvent-based acrylics or urethanes cure through evaporation or thermal exposure, a process that can run from several minutes to several hours. Light-curable — often called UV-curable — coatings instead rely on photoinitiators that trigger rapid polymerization the instant they're exposed to a specific UV or high-intensity visible wavelength, converting the film from liquid to solid in seconds. The Chemistry Behind the Cure Three components define an industrial UV coating: monomers and oligomers, which set hardness, flexibility, chemical resistance, and adhesion; photoinitiators, which absorb light energy and generate the free radicals or cations that start cross-linking; and additives such as flow modifiers, wetting agents, and fluorescent tracer dyes used for inspection. Because most of these formulations are 100% solids, there's no solvent evaporation — which means no pinholes, no shrinkage, and a smaller environmental footprint than a solvent-based system. Why Manufacturers Move to UV-Curable Coatings Processing speed is the headline benefit — curing in seconds instead of the minutes-to-hours a thermal or solvent process requires eliminates drying racks and frees floor space. Because most formulations are solvent-free, VOC emissions drop sharply, easing both environmental compliance and workplace ventilation requirements. The cured film itself offers strong electrical insulation and resistance to thermal shock, moisture, and salt spray. And LED-based curing draws power only while the light is active, cutting energy use and equipment footprint compared with a continuously-heated thermal oven. Solving the Shadow-Area Problem Complex PCBs with tall components can shield parts of the coating from direct line of sight to the light source, leaving those areas uncured and vulnerable to corrosion or shorts over time. Dual-cure conformal coatings solve this with a secondary cure path: moisture cure, where the coating reacts with ambient humidity over 24–72 hours, or a brief low-temperature thermal cure. Either approach gives you the speed of UV cure across most of the board plus a fallback that guarantees full cure in the areas light can't reach. Application Methods Selective coating uses automated robotic dispensing to apply material only where needed, skipping connectors and test points without manual masking — the standard for high-volume, high-precision lines. Spray application suits medium-volume runs but usually requires masking, and fluid lines must be shielded from ambient light to prevent premature cure. Dipping submerges the whole assembly and is efficient for full coverage, though it's less common for light-curable materials given the difficulty of keeping a large open tank of UV-sensitive liquid stable. Selecting a Coating and Its Cure Equipment Viscosity determines flow — low-viscosity…

Curing a bond in two seconds instead of two hours changes more than cycle time — it eliminates the racks, ovens, and floor space that a slow cure demands. High-intensity UV curing systems deliver that speed by using concentrated light rather than heat to drive the chemistry, and understanding how they work is the first step to specifying one correctly. How UV Curing Systems Trigger a Cure A UV curing system delivers a precise, high-intensity dose of ultraviolet light to a substrate using either LED arrays or high-pressure mercury vapor lamps. Unlike a thermal oven, which relies on heat to evaporate solvent or drive a chemical reaction, these systems use photons directly: when light strikes a photoinitiator in the resin, it triggers a chain reaction among monomers and oligomers that cross-links into a solid polymer network in seconds rather than hours. That reaction happens in three stages — initiation, when the photoinitiator absorbs energy and generates free radicals or cations; propagation, when those reactive species bond rapidly with monomers to build long chains; and termination, when chain growth stops and the material reaches full cure. System output has to be engineered to deliver the wavelength and dose a given chemistry needs at every stage. The Core Hardware A production-grade system combines four elements: the light engine (an LED array or mercury bulb), optical delivery — lenses, reflectors, or fiber optic light guides that focus the beam precisely — thermal management to keep output stable during continuous runs, and a control interface for adjusting intensity, exposure time, and wavelength. LED vs. Mercury Vapor: Choosing a Source LED and mercury vapor sources solve different problems. LED systems last upward of 20,000 hours against 1,000–2,000 hours for mercury bulbs, consume markedly less power, switch on instantly with no warm-up, and emit a narrow spectrum (365nm or 405nm are common) that avoids exposing substrates to unneeded IR or UVC energy. Mercury vapor lamps still earn their place where a coating contains multiple photoinitiators tuned to different wavelengths across the UVA/UVB/UVC range — a broad-spectrum source can satisfy all of them at once where a single-wavelength LED cannot. Where High-Intensity UV Curing Earns Its Keep Electronics and micro-assembly. Wire tacking, component encapsulation, and conformal coating of PCBs all benefit from localized curing that produces minimal heat near sensitive parts, enabling rapid assembly of camera modules and sensors. Automotive and aerospace. Headlamp assembly, windshield-adjacent bonding, and ADAS sensor mounting rely on UV curing for speed and repeatability; in aerospace, the same principle applies to structural bonding and coatings that must survive extreme environmental swings. Optical and glass assembly. Because UV light passes through clear substrates, these systems are well suited to glass-to-glass and glass-to-metal bonding in lenses, prisms, and architectural glazing where optical clarity is mandatory. If your line is evaluating a transition from solvent or thermal cure, Email Us to walk through irradiance and wavelength requirements for your specific chemistry. Selecting the Right System for Your Line Four variables drive the specification: irradiance (measured in…

A fixture with several bond points and one single-output spot lamp forces an unpleasant choice: cure the joints one after another and accept the cycle time, or buy another controller. A multi-leg light guide offers a third option, with trade-offs that are worth understanding before the fixture is built around it. Q: When Should a Multi-Leg UV Light Guide Be Used? A: When Several Bond Points Must Cure Together and Can Share One Lamp A multi-leg guide, also called a bifurcated, trifurcated, or multi-pole guide, splits one lamp's output across two or more delivery tips. It fits when a part or fixture has several bonds that should cure in the same trigger, the tips can each be held at a fixed working distance, and the process can accept that every leg depends on the same source. It fits poorly when bond points need different doses, sit far apart, or must be cured at different moments in the cycle. How Incure's Spot Lamps Handle Multiple Points Incure offers two routes to multi-point spot curing. The S20™ UV arc spot lamp pairs with 1-, 2-, 3-, or 4-pole liquid lightguides, where each additional pole splits the same mercury arc output across another simultaneous cure point. The L9000™ UV LED spot lamp supports up to four independent lightguides running from a single controller. Glass fiber guides can also be built as multi-pole guides from one source, or as line-to-circle converters that reshape a circular input into a linear output for a longer bond line. Matching Leg Count to the Fixture Pole count should follow the fixture layout, not the other way around. Incure's S20™ configurations map to common layouts: S20-1P: a single joint, such as an individual connector or small component. S20-2P: symmetrical assemblies and dual-joint fixtures, curing both sides in one trigger instead of indexing the part between two cure steps. S20-3P: triangular fixture layouts and connector potting where three points should finish together. S20-4P: high-volume automated lines with four bonding positions per fixture, where a single-pole lamp would make the cure step the bottleneck. Ordering more legs than the fixture uses does not help; unused tips still need capping and protection, and they still share the source. Email Us with your fixture's bond-point count and layout, and Incure can confirm a matching multi-pole or multi-guide configuration. Trade-Off 1: Every Leg Shares the Source Splitting a lamp across legs means each tip carries part of the source output rather than all of it. Before committing, confirm that each tip still delivers the dose the adhesive needs at its working distance, by measuring at every tip rather than at one. Sharing a source also means a lamp problem affects every leg at once, so lamp maintenance becomes more critical on a multi-leg station. On arc lamps, Incure's replacement bulbs are commonly changed every 1,000–2,000 hours depending on duty cycle. Trade-Off 2: Legs Age Independently Each leg has its own tip window and its own routing. A leg that sits nearer a dispense point…