Microscale Micro Krystal Klear (MSKK) Review (2026)

What it is

Micro Krystal Klear, sold under Microscale's MSKK code, is a clear liquid plastic adhesive built for two related jobs on a model kit: gluing existing clear parts in place and forming new small glazed windows where none exist. It ships in a 1 fl. oz. bottle and needs no mixing or special preparation before use, which keeps it simple to reach for mid build. The formula dries transparent without the fogging or yellowing that some cements can leave behind on clear plastic, and because it is water based rather than a solvent cement, it will not attack or craze the surrounding clear plastic the way liquid poly cement can on thin canopy parts.

Forming small windows

One of the more distinctive uses for this product is bridging small open gaps, up to roughly a quarter inch, with a thin film that dries clear like glass. This is a common technique on airliner and small scale aircraft kits, where individual window openings in a fuselage need glazing but installing dozens of tiny pre cut clear parts is impractical. A drop applied across the opening, allowed to skin over and dry, forms a passable window without needing a separate clear part for each hole. Builders doing rail, ship portholes or diorama scratch work use the same trick for small round or square openings elsewhere on a model.

Handling and forgiveness

Because the adhesive is water based, it can be thinned with a drop of water if it becomes too thick, and fresh mistakes can be wiped away or cleaned up with a damp brush before the film sets, which is more forgiving than a solvent cement that bonds within seconds. This makes it a comfortable product for less experienced builders who are still learning how much adhesive a given clear part needs. It also means tools and fingers clean up easily after use, without needing solvent based cleaners that could damage nearby painted or clear surfaces on the model.

Limitations to expect

On larger openings, the film can shrink slightly as it fully cures, which may leave a faint dip or unevenness compared with a rigid pre molded clear part, so it works best on small to modest sized gaps rather than large canopies or windshields. It also has no real structural strength, so it should not be relied on for anything beyond light glazing and clear part attachment. The 1 fl. oz. bottle is a workable size for occasional use, though builders doing many clear windows across a fleet of models may need to restock periodically.

Bottom line

Micro Krystal Klear remains a well regarded, inexpensive tool for modelers who regularly handle clear parts or want to glaze small scratch built openings without buying individual clear sprues. Its water based, easy cleanup formula makes it forgiving for less experienced hands, while its main tradeoff, slight shrinkage on larger spans, is worth knowing before relying on it for anything bigger than a small window or porthole. Keeping a bottle on the bench alongside a standard plastic cement covers most of what a builder needs for both structural joints and the smaller glazing jobs that come up on aircraft, ship and rail kits alike.

Frequently asked questions