Loon UV Fly Finish – Thin/Thick/Flow Review

Getting Up Close with the Loon UV Fly Finish – Thin/Thick/Flow

For years, I’ve relied on tried-and-true methods for finishing and reinforcing my creations, whether on the intricate world of fly tying, the robust demands of outdoor gear repair, or even the precise requirements of lab setups. However, the quest for a faster, more durable, and cleaner finish led me to explore advanced material solutions. The Loon UV Fly Finish – Thin/Thick/Flow caught my eye for its promise of rapid curing and versatile application, addressing a common bottleneck in many hands-on projects. I was particularly intrigued by the concept of having infinite work time until the moment of cure, a stark contrast to traditional epoxies or lacquers that demand a precise and often rushed application.

My journey to this particular set of UV resins was driven by a specific frustration: the lengthy drying times of conventional finishes. For fly tiers, this means waiting hours between coats, tying up valuable workbench time. For gear repair, it often means improvising to keep an item functional while its repair cures, a sometimes precarious situation. I’d tried various quick-drying lacquers and even some two-part epoxies, but none delivered the combination of clarity, gloss, and sheer speed that seemed to be the holy grail of finishing. Early iterations of UV resins I’d encountered in the market were often either too thick, making fine detail work impossible, or too thin, requiring multiple applications that negated the time savings. The idea of a single product line offering viscosity options was a significant draw.

My initial impression upon unboxing the three bottles – Thin, Thick, and Flow – was one of professional packaging and a no-nonsense approach. The bottles themselves are compact, fitting easily into a fly-tying kit or a small toolkit. The clear resin, even before curing, had a quality sheen to it, hinting at the glossy finish the product description promised. There were no unnecessary frills, just three distinct viscosities of what appeared to be a high-performance material. Compared to the more cumbersome tubes of some two-part epoxies or the aerosol cans of lacquers, this felt like a more controlled and precise solution. My first reaction was a blend of practical satisfaction and eager anticipation, a feeling that I might finally have found a solution to a persistent challenge.

First Use Experience

My initial foray into using the Loon UV Fly Finish – Thin/Thick/Flow involved a batch of trout flies that were nearing completion. I selected the Thick viscosity first, as it’s touted as the all-purpose option, perfect for building heads and wing cases. Under a good quality UV light, the transformation was almost instantaneous; a few seconds of direct exposure and the formerly liquid resin became a solid, glossy, and perfectly clear dome. I immediately noticed the lack of any residual tackiness, a common issue with some UV resins that require further wiping or curing.

This rapid curing meant I could move straight onto the next fly without waiting for drying. The ease of application was surprising; the resin flowed smoothly but not so much that it ran uncontrollably. I found that for smaller flies, a thin layer was all that was needed, while building up larger heads on streamer patterns was straightforward with this thicker consistency. The experience was significantly cleaner than using traditional lacquers, with no solvent fumes to contend with.

Extended Use & Reliability

After several weeks of consistent use on a variety of fly patterns and even some minor repairs on outdoor gear (like reinforcing seams on a backpack), the Loon UV Fly Finish has proven its mettle. The Thick version remains my go-to for general fly head construction and reinforcing fragile points, consistently delivering a durable, chip-resistant finish. I’ve subjected these flies to vigorous casting, striking against rocks, and even the occasional toothy encounter, and the cured resin holds up remarkably well.

The Thin viscosity has become invaluable for creating delicate wing cases, adding a glassy sheen to bodies, and even for sealing small knots. Its ability to spread thinly without pooling is excellent, allowing for subtle yet effective enhancements. The Flow version, with its slightly higher viscosity than Thin but less body than Thick, bridges the gap beautifully for building moderately sized heads or smooth, even coatings on larger flies where a bit more control is desired over the Thin option. I’ve found no signs of cracking, yellowing, or degradation in clarity, even when the finished items have been exposed to sunlight and moderate moisture.

Maintenance has been remarkably simple. A quick wipe of the bottle nozzle with a lint-free cloth after use, and ensuring the cap is sealed tightly, has prevented any clumping or curing within the bottles. Storage in a cool, dark place is all that’s required. Compared to the often-sticky residue and long drying times of other adhesives and finishes I’ve used, this UV resin system is a breath of fresh air. There’s a satisfying reliability in knowing that once cured, the finish is permanent and robust.

Breaking Down the Features of Loon UV Fly Finish – Thin/Thick/Flow

Specifications

The Loon UV Fly Finish – Thin/Thick/Flow system comprises three distinct resin viscosities, each designed for specific applications, all packaged in 10 ml (0.34 oz) bottles. The manufacturer, Loon, has engineered these resins to cure rapidly under UV light, offering a clear, glossy, and durable finish without the extensive waiting periods associated with traditional adhesives. Each bottle is equipped with a fine applicator tip, allowing for precise application of the resin onto intricate surfaces.

The Thin viscosity is ideal for creating ultra-fine details, like egg-sac finishes or thin, translucent wing cases, allowing for exceptional control and minimal build-up. The Thick viscosity, described as the standard all-purpose clear fly finish, is perfect for building substantial fly heads, robust bodies, and durable wing cases, offering a more substantial coating. The Flow viscosity provides a middle ground, offering a slightly more fluid application than the Thick, making it excellent for creating smooth, even coatings and moderate head building without being overly thin. The absence of hazardous fumes is a significant specification, contributing to a safer working environment, especially in enclosed spaces like workshops or homes.

Performance & Functionality

In its primary role as a finishing and reinforcing agent, the Loon UV Fly Finish – Thin/Thick/Flow excels. The speed of curing is its most impressive attribute; under a suitable UV light, the transition from liquid to solid is near-instantaneous, providing immediate structural integrity and a finished appearance. This allows for a workflow that is dramatically accelerated compared to air-curing or heat-curing alternatives.

The durability of the cured resin is notable. It creates a hard, glossy surface that resists abrasion, scuffing, and even minor impacts, crucial for items subjected to wear and tear. The clarity of the finish is consistently excellent across all three viscosities, maintaining the true colors of the materials beneath and providing a professional, high-gloss aesthetic. Its performance is particularly strong in creating waterproof seals, preventing materials from absorbing water, which is paramount for fly fishing applications.

Design & Ergonomics

The design of the applicator bottles for this UV resin is straightforward and highly functional. Each bottle features a narrow, pointed tip that allows for precise application, minimizing waste and enabling detailed work. The bottles themselves are made of a flexible, yet durable material, allowing for controlled dispensing of the resin with gentle pressure.

The ergonomics are well-suited for intricate tasks. Whether holding a fly rod to tie a fly or a piece of equipment for a repair, the bottles are comfortable to grip. The smooth flow of the resin, once the tip is primed, makes it easy to control the amount dispensed, preventing accidental over-application. The snap-on caps are secure, effectively preventing premature curing and leakage during storage.

Durability & Maintenance

The long-term durability of the cured Loon UV Fly Finish is impressive. After repeated exposure to various conditions, including water, sunlight, and physical stress, the finish remains intact, showing no signs of yellowing, cracking, or becoming brittle. This longevity is a key advantage over many conventional lacquers or varnishes that can degrade over time.

Maintenance of the bottles themselves is minimal. A brief cleaning of the applicator tip after each use, followed by a secure capping, is usually sufficient to keep them in optimal working order. The resin itself is stable and does not degrade within the bottle if stored properly, away from ambient UV light. The resilience of the cured finish suggests it will withstand the rigors of its intended applications for a considerable period.

Accessories and Customization Options

While the Loon UV Fly Finish – Thin/Thick/Flow bottles themselves are the primary product, the system’s effectiveness is inherently tied to the need for a compatible UV curing light. Loon offers several UV lights designed specifically for their resins, which are highly recommended for optimal curing performance. These lights ensure rapid and complete polymerization of the resin.

Beyond the light source, there are no other included accessories. However, the versatility of the three viscosities acts as a form of “customization” for the user’s needs, allowing them to select the appropriate resin for the task at hand. For very intricate work, a fine-tipped applicator needle can sometimes be attached to the bottle tip for even greater precision, though the integrated tip is usually sufficient for most users.

Pros and Cons of Loon UV Fly Finish – Thin/Thick/Flow

Who Should Buy Loon UV Fly Finish – Thin/Thick/Flow?

This UV resin system is an excellent choice for fly tiers looking to expedite their finishing process and achieve durable, professional-looking flies. It’s also highly beneficial for hobbyists and DIYers involved in small-scale crafting, model making, or jewelry creation where a quick, durable, and clear finish is desired. Anyone engaged in minor equipment repair that requires a strong, waterproof, and aesthetically pleasing bond will find great utility here, especially if traditional epoxies are too messy or slow.

Individuals who should probably skip this product might include those who need to finish extremely large surface areas very quickly and cheaply, or those who cannot invest in a UV curing light. Users requiring a completely matte or flexible finish might also need to explore other options, as this product is designed for a glossy, rigid cure. For those working in highly sterile or medical environments, the precision of application might not meet stringent contamination control protocols without significant adaptation.

A UV curing light is the absolute must-have accessory for this system; without it, the resin will not cure. Beyond that, a small supply of lint-free wipes can be helpful for cleaning applicator tips or any accidental drips before curing. For extreme detail work, a set of fine-tipped applicator needles can enhance precision, though the built-in tips are quite capable.

Conclusion on Loon UV Fly Finish – Thin/Thick/Flow

The Loon UV Fly Finish – Thin/Thick/Flow system represents a significant advancement in finishing and sealing materials for a variety of hands-on applications. Its ability to cure rapidly under UV light, coupled with the provision of three distinct viscosities, offers unparalleled speed, precision, and versatility. The resulting finish is consistently clear, glossy, and remarkably durable, holding up exceptionally well to the stresses of its intended uses, from the demanding environment of fly fishing to the detailed work of crafting.

The value proposition here is strong for those who prioritize efficiency and quality. While the initial investment for the resin and a UV light might seem higher than traditional alternatives, the time saved, the reduced mess, and the superior durability often justify the cost over time. I wholeheartedly recommend this product to anyone involved in fly tying, crafting, or small-scale repair where a fast-setting, robust, and aesthetically pleasing finish is paramount. It has become an indispensable part of my toolkit, transforming what were once time-consuming finishing steps into quick, satisfying completions.