Mr. Hobby Mr. Color Flat Base 10ml – Lacquer Flattening Agent Paint Additive
The Mr. Hobby Mr. Color Flat Base lineup is the dedicated lacquer flattening agent system used by serious modelers to convert gloss and semi-gloss Mr. Color paints into custom matte finishes. The product itself is a high-concentration suspension of fine flattening particles in a clear lacquer carrier — when mixed into paint, the particles disperse throughout the cured film and scatter incoming light, breaking up the glossy reflection that wet lacquer otherwise dries to.
Why three SKUs instead of one: scale modelers don't share a single definition of "matte." A matte tank looks different from a matte figure looks different from a matte aircraft, and serious modelers want surface character to match their subject. Mr. Hobby splits the Flat Base line into three particle-size variants so builders can pick the texture profile that fits the work — coarser for weathered authenticity, finer for clean showcase finish, standard for everything in between. Detailed selection criteria are in the variant guide below.
This is fundamentally a workflow tool rather than a finished product. You don't airbrush Flat Base by itself; you mix it into your actual paint or clear coat first, then airbrush the modified mixture. The 10ml bottle holds enough additive to flatten roughly 50-100ml of paint depending on mixing ratio — practical inventory math is one Flat Base bottle per several bottles of finished paint.
Variant Selection Guide
Choose C30 Flat Base if you need: A general-purpose flattening agent for most everyday modeling work. C30 is the original formulation that has been in continuous production since the 1980s — the default Flat Base when no specific texture requirement applies. Suitable for converting any gloss Mr. Color paint to semi-gloss or matte using standard manufacturer ratios. Most builders who only stock one Flat Base variant choose C30 as the all-purpose option.
Choose C188 Flat Base Rough if you need: A drier, more textured matte finish with visible "tooth." The coarser particle size produces a surface that catches light unevenly — the visual texture of a freshly-cast resin part, sun-baked desert paint, or battlefield-weathered armor. Particularly suited for AFV (armored fighting vehicle) modeling, tank weathering, and any subject where authentic-looking rough finish supports the realism of the build. Texture intensifies at higher mixing ratios.
Choose C189 Flat Base Smooth if you need: A cleaner, more uniform matte finish without visible texture. The finer particle size produces a velvet-flat surface that holds up better to handling, photographs cleanly under studio lighting, and looks closer to traditional showcase finish. Preferred for figure painting, contest builds, automotive interior surfaces, and any subject where a polished matte look matters more than weathered authenticity.
All three variants are mixed into paint using the same manufacturer-documented ratios shown in the application guide. The choice between them is about final surface character, not workflow — application, thinning, and curing are identical regardless of which Flat Base you select.
Why Modelers Choose Mr. Color Flat Base
What makes the Mr. Color Flat Base lineup the standard reference for lacquer flattening agents — across user feedback at Newtype, Galactic Toys, USA Gundam Store, and the broader scale modeling community — comes down to three things: particle consistency batch-to-batch, predictable mixing-ratio response, and compatibility with the full Mr. Color paint range.
The particle consistency is the quiet professional argument. A bottle of C30 you bought five years ago and a bottle you buy today produce the same flatness at the same mixing ratio — important for builders mid-way through long projects who don't want surface character to shift between paint sessions. Generic flattening agents from third-party manufacturers can vary noticeably between production batches; Mr. Color Flat Base does not.
The predictable mixing-ratio response is what separates Mr. Color Flat Base from less-refined flattening additives. Mr. Hobby's documented semi-gloss and matte conversion ratios are reliable across paint colors, thinning ratios, and application conditions. Builders can dial in their preferred flatness once and reproduce it consistently — the additive does not introduce surprise variability into an otherwise controlled workflow.
The compatibility argument is structural. Mr. Color Flat Base is formulated for the Mr. Color lacquer family and works seamlessly with the full C-series paint catalog plus Mr. Color GX paints, Mr. Color Spray (when decanted into airbrush use), and Mr. Color top coats. Staying within the Mr. Color additive ecosystem eliminates chemistry compatibility questions that arise when mixing lacquer paint with non-Mr. Color flattening agents.
