How to Achieve a Smooth Gloss Finish with Mr. Color C46
By GUNNZO | Published: 2026-08-19
Category: How-to Guides
Learn step-by-step techniques for a flawless gloss coat using Mr. Color C46. From surface prep to airbrushing and curing, master the art of a mirror-like finish on your Gunpla.
Achieving a smooth, mirror-like gloss finish is a hallmark of professional-looking Gunpla and scale models. Whether you're aiming for a showroom shine or preparing a base for decals and panel lines, a flawless clear coat is essential. Among the many options available, Mr. Color C46 Gloss Clear stands out as a reliable choice for modelers seeking a durable, high-gloss finish.
In this guide, we'll walk you through the entire process—from surface preparation to the final polish—so you can confidently apply Mr. Color C46 and get that glassy, automotive-style finish every time. We'll also share tips on avoiding common pitfalls like orange peel, dust nibs, and uneven application.
Why Choose Mr. Color C46 for a Gloss Finish?
Mr. Color C46 is a solvent-based acrylic lacquer that dries to a hard, glossy finish. Unlike water-based clears, it levels beautifully and can be polished to an even higher shine. Its quick drying time makes it ideal for multiple coats in a single session, and it's compatible with a wide range of paints, including enamels and other lacquers.
For Gunpla enthusiasts, Mr. Color C46 is a go-to for achieving that 'showroom' look on parts like car models, mecha armor, and even weapon components. It also serves as an excellent protective layer, shielding your paint job from scratches and handling. If you're building a kit that deserves extra gloss, such as the MG Full Armor ZZ Gundam Ver. KA, a smooth gloss coat will make the panel lines and decals pop.
- Dries quickly, allowing multiple coats in one session.
- Self-leveling properties reduce brush marks and orange peel.
- Can be polished with compounds for an even higher gloss.
Essential Supplies for a Smooth Gloss Coat
Before you start, gather the right tools. You'll need Mr. Color C46, a quality airbrush (or spray can), a suitable thinner (like Mr. Color Leveling Thinner), and a clean, dust-free workspace. A tack cloth or anti-static brush is crucial for removing dust before spraying.
For brush application, use a soft, wide brush and apply thin, even coats. However, for the smoothest results, an airbrush is highly recommended. If you're working on a complex kit like the HGBD:R #035 Aun[RIZE] Armor, an airbrush allows you to control the flow and achieve an even coat over intricate parts.
- Airbrush with a 0.3mm needle or larger for clear coats.
- Mr. Color Leveling Thinner for a smoother finish.
- Tack cloth or anti-static brush to remove dust.
Preparing Your Model for a Flawless Gloss
The secret to a smooth gloss finish lies in the preparation. Start by ensuring your model's surface is perfectly smooth. Sand any imperfections with fine grit sandpaper (e.g., 1000-2000 grit) and polish if necessary. Wash the parts with mild soapy water to remove any oils or release agents.
If you're applying gloss over a painted surface, make sure the paint is fully cured. A gloss coat will magnify any surface flaws, so take your time to fix scratches, seams, and uneven areas. For Gunpla, this is especially important if you're using decals—a smooth base ensures they adhere without silvering.
- Sand with 1000-2000 grit to remove imperfections.
- Wash parts with soapy water and let dry completely.
- Apply a primer if needed to create a uniform base.
Airbrushing Mr. Color C46: Step-by-Step
Mix Mr. Color C46 with Mr. Color Leveling Thinner in a ratio of about 1:1.5 to 1:2 (paint to thinner). The thinner helps the paint level and reduces the risk of orange peel. Pour the mixture into your airbrush cup and test on a scrap piece to adjust the pressure—around 15-20 psi is ideal.
Apply thin, even coats from a distance of 10-15 cm. Start with a light mist coat to establish a base, then follow with two or three slightly heavier coats, allowing each to dry for 10-15 minutes. The goal is a wet-looking, glossy surface without runs or sags. If you're working on a large kit like the MG Full Armor ZZ Gundam Ver. KA, take your time and cover all surfaces evenly.
- Mix ratio: 1 part C46 to 1.5-2 parts Leveling Thinner.
- Spray at 15-20 psi, 10-15 cm from the surface.
- Apply 3-4 thin coats, letting each dry between coats.
Troubleshooting Common Gloss Finish Problems
Even experienced modelers encounter issues. Orange peel—a bumpy texture—is often caused by spraying too dry or too far away. To fix, sand the surface with 2000-grit and reapply a wetter coat. Dust nibs can be removed by polishing with a fine compound after the coat has fully cured.
Another common problem is blushing, a milky appearance caused by high humidity. If this happens, wait for dry weather or use a retarder. For Gunpla, remember to apply gloss before panel lining and decals, as it provides a smooth surface and protects the underlying paint.
- Orange peel: sand with 2000-grit and reapply a wetter coat.
- Dust nibs: polish with a fine compound after curing.
- Blushing: spray in low humidity or use a retarder.
Alternative Application Methods: Spray Cans and Brush
Not everyone has an airbrush, but you can still achieve a decent gloss with spray cans or a brush. If using a spray can, shake well and spray in short bursts from about 20 cm away. Apply multiple light coats rather than one heavy one.
For brush application, use a high-quality, soft brush and apply in one direction. Thin the paint slightly and work quickly to avoid brush marks. While these methods may not yield the same perfection as airbrushing, they're suitable for small parts or touch-ups. For a kit like the Warhammer Age of Sigmar: Orruk Warclans Swampboss Skumdrekk, a brush-applied gloss can still enhance the model's details.

- Spray cans: keep 20 cm distance, use short bursts.
- Brush: use soft brush, apply thin coats in one direction.
- Test on scrap first to gauge consistency.
Curing and Polishing for a Mirror Shine
Mr. Color C46 dries to the touch in about 30 minutes, but it's best to let it cure for 24 hours before handling or polishing. Once cured, you can polish the surface with fine compounds (like Tamiya Finishing Compounds) to achieve an even higher gloss.
Start with a fine compound, then move to a finishing polish. Use a soft cloth or electric polisher for best results. This step is optional but highly recommended if you're aiming for a show-stopping finish. Remember to clean the surface between compounds to avoid scratching.
- Let the gloss coat cure for at least 24 hours.
- Polish with fine compounds for a mirror shine.
- Use a soft cloth or polisher to avoid scratches.
With the right techniques and a bit of patience, achieving a smooth gloss finish with Mr. Color C46 is within your reach. Whether you're working on a Gunpla kit like the MG Full Armor ZZ Gundam Ver. KA or a Warhammer miniature, a flawless gloss coat elevates your model to the next level. Remember to prepare your surface, apply thin coats, and let it cure properly. For all your modeling needs, explore our collection of paints and supplies, including the Aqueous Hobby Color H59 Gloss IJN Green 10ml for your painting projects. Happy building!




