Gunpla panel lining 2025 guide: How to get perfect lines without damage?

Gunpla panel lining is one of the simplest yet most powerful techniques to make your Gundam model kit stand out with crisp, detailed lines. At Japan Figure, we know builders worldwide want their Gunpla to look as close to the anime designs as possible and panel lining is the key to achieving that.

This technique has grown in popularity among beginners and seasoned hobbyists alike because it instantly adds depth, realism, and sharpness to any build. Whether you’re working on your very first HG kit or adding finishing touches to a Master Grade, understanding the right way to panel line is essential to avoid damage and get professional-looking results.

1. What is Gunpla panel lining?

Gunpla panel lining is the process of applying ink, paint, or markers into the recessed lines of a Gundam model. These engraved details, known as “panel lines,” are designed to bring out the mechanical realism of the mobile suit. Without panel lining, many models look flat and toy-like; with it, every detail pops.

Key differences and benefits of Gunpla panel lining

• Adds depth and realism: Makes your Gundam model panel lining look closer to the anime and mechanical concept art.
• Highlights intricate details: Shows off design features that might otherwise be overlooked.
• Improves contrast: Dark lines make colors stand out more vividly.
• Simple upgrade: Even a beginner can achieve a big visual impact with basic tools.
• Customizable style: Different Gunpla panel lining colors (black, grey, brown) allow you to match the tone of your kit.

It’s no surprise that panel lining has become a global favorite technique in the Gunpla community. From quick touch-ups with a Gundam marker panel lining tool to advanced applications with washes like Tamiya panel liner, there’s a method for every skill level. Many builders even apply panel lining techniques to their Gundam Wing Gundam models to bring out every mechanical detail.

2. How to properly panel line my Gundam?

Panel lining may look intimidating, but with the right approach, it’s surprisingly easy. The process involves choosing the correct tools, preparing your kit, applying the lines carefully, and then cleaning up before sealing your work. Each step matters, because doing it wrong can lead to messy results or even damage to your model.

Below, we’ll go through each stage of the Gunpla panel lining process, from tool selection to top coating, so you can achieve crisp, professional lines on any Gundam kit. Whether you’re working on classic suits or aiming to highlight details of the strongest Gundam, these steps will help your model look impressive.

2.1 Choosing your tools

When it comes to Gunpla panel lining tools, you have three main options: panel lining markers, enamel washes, and mechanical pencils. Each has its strengths, and the best choice depends on your skill level and the look you want. Beginners often start with Gundam marker panel lining pens, which are easy to use and affordable. More advanced builders may prefer Tamiya panel liner or other pour-type washes for smoother, sharper results.

For those who like subtle effects, mechanical pencils offer a low-risk way to create fine shadows. Each method enhances the details of your Gundam model panel lining differently, so experimenting will help you find your preferred style.

2.2 Preparing your kit before lining

Preparation makes or breaks the panel lining process. Before applying any ink, ensure your Gundam model kit parts are clean and free from dust or oils. Builders often wash sprues or assembled parts with mild soap water to remove residue from manufacturing. This prevents ink from smudging or beading.

It’s also recommended to decide whether you’ll do Gundam panel lining before or after assembly. Lining before assembly lets you reach recessed areas more easily, while after assembly allows for a more cohesive look. Both methods work, it depends on your workflow preference.

2.3 Applying panel lines

Now comes the fun part: applying the panel lines. With markers, simply touch the pen tip to the recessed line and let the ink flow. For Gundam panel liner pour type, apply a small drop at the start of the groove. The ink will flow naturally along the line through capillary action. With pencils, gently trace the engraved lines for a softer finish.

Take your time and don’t rush. Always work in small sections so you can quickly clean up excess ink before it dries. The goal of Gunpla panel lining is precision, not speed, so patience pays off with clean results.

2.4 Cleaning mistakes safely

Mistakes are inevitable, but cleaning them safely is crucial. For marker ink, a soft rubber eraser or a cotton swab lightly dipped in rubbing alcohol usually does the trick. For enamel-based washes, use enamel thinner carefully, avoiding contact with raw plastic as it can cause stress cracks.

The key is not to scrub aggressively. Instead, gently wipe away excess ink while protecting the underlying paint or plastic. This step ensures your Gunpla panel liner work looks sharp without damaging the kit.

2.5 Sealing your work with a top coat

Once your panel lines are complete, sealing them with a top coat is highly recommended. A top coat not only protects the lines from smudging but also enhances the finish of your Gundam. There are three main types: matte (flat, realistic look), gloss (shiny and polished), and semi-gloss (a balance between the two).

Pro builders often apply a gloss coat before panel lining to make cleanup easier, then finish with a matte or semi-gloss to lock everything in. Choosing the right top coat ensures your Gunpla panel lining kit looks professional and durable over time.

3. Gunpla panel lining tools: Best markers and paints explained

Choosing the right tools for Gundam panel lining can completely change your results. While markers are easy and beginner-friendly, washes give a sharp, professional look, and pencils offer subtle shading with zero risk. Let’s break down each tool type so you know exactly which to use for your Gunpla project.

3.1 Panel lining markers

Panel lining markers are the most common starting point for beginners. Easy to use and widely available, these pens are specifically designed for Gunpla. They come in different tip sizes and colors, usually black, gray, and brown to match different Gundam armor tones. Simply draw into the grooves, wipe off the excess, and your kit instantly looks sharper.

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They’re especially handy for casual builders who want fast results without dealing with solvents or brushes. Since cleanup is as simple as using a cotton swab or eraser, markers are the most hassle-free way to enhance your Gunpla model kit.

3.2 Panel lining washes (pour type)

For more advanced builders, enamel or acrylic panel lining washes like the famous Tamiya panel liner, are the go-to. Instead of drawing directly, you apply a small drop of the thin paint and let it flow into the panel lines via capillary action. This creates an extremely crisp finish that’s closer to professional model-building standards.

The downside is that it requires enamel thinner or cleaning solutions, meaning there’s a slight learning curve. Still, once mastered, panel lining washes deliver the most striking and realistic look for your Gundam, especially on MG and RG kits with complex details.

3.3 Mechanical pencils

Mechanical pencils are an underrated tool for panel lining. By tracing the engraved lines with a fine 0.3mm or 0.5mm pencil, you get a soft, shaded effect that’s different from markers or washes. This method is risk-free since you’re not using ink or solvents, and mistakes can be erased easily.

It’s also ideal for builders who want subtle depth without the commitment of permanent ink. While pencils won’t pop as much as markers or washes, they’re a safe and flexible choice for beginners and casual modelers who prefer a less intense finish. And if you’re collecting kits from series with rich character design, such as those featuring Gundam Gquuuuuux characters, panel lining will help emphasize their unique armor and aesthetics.

4. FAQs - People also ask about Gunpla panel lining

Panel lining is one of the most common questions among Gundam modelers. Below are answers to the most frequently asked queries to help you achieve sharp, professional results safely.

4.1 Should you panel line Gunpla?

Yes, you should panel line Gunpla because it dramatically enhances detail, making the engraved lines stand out. Without panel lining, Gundam kits often look flat. While it’s optional, most builders agree that it’s the simplest way to make your model appear more realistic and visually dynamic with minimal effort.

4.2 How to properly panel line Gundam?

To panel line Gundam properly, choose your tool:marker, wash, or pencil to apply the ink into the grooves, then clean up any excess with a cotton swab or eraser. Work slowly and in small sections. Finally, apply a top coat if desired to seal and protect your panel lining work.

4.3 Is it better to panel lines with grey or black?

Grey is best for lighter-colored Gundam kits, as it looks more natural and subtle. Black works well on darker armor parts, creating strong contrast. Many modelers mix both, using grey for white or light blue surfaces and black for red or navy panels to balance realism and depth.

4.4 Should I top coat my Gunpla before panel lining?

It’s usually better to panel line before applying a top coat. A matte, gloss, or semi-gloss top coat seals your work, preventing smudges and fading. However, if you’re using enamel washes on bare plastic, applying a gloss coat first can protect the surface and reduce stress cracks.

4.5 How to panel line Gunpla without damaging the plastic?

To avoid damaging Gunpla plastic, avoid harsh thinners directly on bare parts. Use Gundam markers or mechanical pencils for a safe method. If using enamel washes like Tamiya panel liner, apply a protective gloss coat first. Always clean gently with cotton swabs, avoiding excessive rubbing or strong solvents.

Gunpla panel lining is one of the easiest yet most rewarding steps in building Gundam kits. By adding depth and realism to every groove, it transforms your model from a simple plastic build into a detailed masterpiece. With the right tools, whether Gundam markers, Tamiya panel liner, or pencils, you can achieve clean, sharp lines without damaging your kit.