How to Apply Water Decals Without Setting Solution: Alternative Methods

Water decals, also known as water-slide decals, are a popular choice among Gundam modelers for their realistic appearance and ability to conform to curved surfaces. However, many beginners find themselves without a dedicated setting solution, which is typically used to soften and adhere the decal to the model. The good news is that you can still achieve excellent results without it, using common household items and proper techniques.

In this guide, we'll explore several alternative methods to apply water decals without setting solution. Whether you're building a high-grade kit like the MG Gundam Astray Noir 1/100 or adding details to a masterpiece like the MGEX Strike Freedom Gundam, these tips will help you get a professional finish.

We'll cover simple DIY adhesive solutions, the use of heat, and the importance of surface preparation. By the end, you'll have the confidence to tackle any water decal project, even without specialized products.

Why Setting Solution Is Used and When You Can Skip It

Setting solutions, like Micro Set and Micro Sol, are designed to soften the decal film and help it adhere to the model's surface, especially on curved or textured areas. They also reduce the risk of silvering, where air gets trapped under the decal, leaving a shiny outline. However, if you're applying decals to a flat, glossy surface, you can often achieve great results without them.

Many Gundam kits have flat or slightly curved panels, making them forgiving for decal application. For instance, the large flat surfaces on the MG Gundam Astray Noir 1/100 are ideal for decals without setting solution. But for complex curves, like those on the MGEX Strike Freedom Gundam, you'll need to be extra careful with the alternative methods below.

If you're using high-quality decals, such as the Holographic Water Decal for MGEX Strike Freedom Gundam 1/100, they often have a strong adhesive backing that reduces the need for setting solution. Still, understanding these alternatives will make you a more versatile modeler.

• Setting solution is not mandatory for flat surfaces.
• High-quality decals often have better adhesive properties.
• Proper surface preparation is key to successful decal application.

Preparing Your Surface for Decal Application

Before applying any decal, ensure the surface is clean and smooth. Wash the parts with mild soap and water to remove any mold release agents or fingerprints. After drying, apply a gloss coat. A glossy surface provides a smooth, even base for the decal, reducing the chance of silvering and making it easier to slide the decal into position.

If you don't have a gloss coat, you can use a polishing cloth to buff the plastic to a shine. This works well on bare plastic, but be cautious not to scratch the surface. For best results, use a dedicated gloss clear coat, which also protects the paint underneath.

For kits like the GG MGSD Wing Gundam Zero EW Rebellion Ver. (Third Party), which may have a slightly textured surface, a gloss coat is especially important to ensure decals adhere properly without setting solution.

• Wash parts with soap and water to remove oils.
• Apply a gloss coat for a smooth base.
• Buff bare plastic if no gloss coat is available.

DIY Adhesive Solutions: Vinegar, Dish Soap, and More

One of the most common alternatives to commercial setting solution is a mixture of water and a few drops of white vinegar. Vinegar is mildly acidic and helps soften the decal film slightly, improving adhesion. Mix about one part vinegar to three parts water in a small dish. Soak the decal in this solution for the usual time, then apply it to the model.

Another effective DIY option is using a tiny drop of dish soap in your water bath. Dish soap reduces the surface tension of the water, allowing the decal to slide more easily and conform to curves. It also helps eliminate air bubbles. Just be sure to use a very small amount—too much soap can leave a residue.

Some modelers swear by using a drop of white glue or PVA glue mixed with water as a decal adhesive. Apply a thin layer of this mixture to the model where the decal will go, then place the decal on top. The glue dries clear and holds the decal firmly. This method is particularly useful for large decals that might otherwise lift.

• Vinegar-water mix (1:3) softens decals.
• Dish soap in water helps decals slide and reduces bubbles.
• PVA glue mixture acts as a strong adhesive for stubborn decals.

Using Heat to Conform Decals to Curved Surfaces

Heat is a powerful tool for making decals conform to complex curves without setting solution. After placing the decal on the model, use a hairdryer on a low heat setting, holding it about 15-20 cm away. Gently warm the decal, which will soften the film and allow it to stretch and wrap around curves. Be careful not to overheat, as this can warp the decal or damage the plastic.

This technique works exceptionally well on rounded parts like shoulder armor or shields. For example, when applying decals to the 1/35 Barbatos Gundam Bust Model Kit, which has a mix of flat and curved surfaces, heat will help the decal settle into every contour.

After heating, use a soft cloth or cotton swab to press the decal down while it's still warm. This ensures a tight bond and eliminates any remaining air bubbles. Let the decal cool completely before handling.

• Use a hairdryer on low heat, 15-20 cm away.
• Press decal with a cloth while warm.
• Let cool completely before touching.

The Importance of a Top Coat to Seal Decals

Once your decals are applied and dry, it's crucial to seal them with a top coat. A clear coat, either gloss or matte, protects the decals from scratches, moisture, and UV damage. It also helps hide the edges of the decal film, making them look painted on.

If you've used DIY adhesives like vinegar or PVA glue, a top coat is even more essential, as these adhesives may not be as durable as commercial setting solutions. Apply a thin, even layer of top coat and allow it to cure fully before handling the model.

For a kit like the HeMoXian 1/100 - Non Zero Series UTX-6030 Over Zero Tastier, which features intricate decal designs, a top coat will ensure your hard work lasts for years. It also gives the model a unified finish, whether you prefer gloss or matte.

• Top coat protects decals and hides film edges.
• Essential when using DIY adhesives.
• Choose gloss or matte based on your preference.

Applying water decals without setting solution is not only possible but can yield excellent results with a bit of practice. By preparing your surface, using DIY adhesives, leveraging heat, and sealing with a top coat, you can achieve a professional finish on any Gundam kit. For your next project, why not try these techniques with a high-quality decal set like the Holographic Water Decal for MGEX Strike Freedom Gundam 1/100? It's a great way to test your skills and add stunning detail to your model.