Base Coating Miniatures: A Beginner's Guide

The base coat on miniatures is the first layer of solid colour you apply over the primer to create a uniform, opaque canvas, forming the foundation upon which subsequent highlights, shadows, and details will be built. Mastering it is crucial for a professional finish.

Let's get into it, future master of brushes! If you've made it here, it's because you want your miniatures to stop looking like they were painted by a beginner and start looking like works of art. In my experience, it all starts with a great base coat on miniatures. And I'm going to show you how to nail it!

What is the base coat on miniatures and why is it so crucial?

The base coat is the first solid, uniform layer of colour you apply to an already primed miniature. It is the foundation of your paint job; its purpose is to cover the primer and establish the main tone of each area, preparing the surface for details, shadows, and highlights.

Imagine you're building a house. The base coat is the foundations and the walls. Without a good base coat, colours will be patchy, coverage will be a disaster, and your frustration will grow faster than an orc horde.

From experience, I can tell you that many beginner mistakes stem from a poorly applied base coat. Either they apply it so thick that it covers all those amazing details on the mini, or they choose a colour that doesn't help at all.

My golden tip: Don't think of the base coat as a boring formality. It's your first important artistic decision and the one that defines everything that comes after!

Wait, isn't this the same as the primer?

Beginner mistake number one! No, it's not the same. It's a very common mix-up, but primer and base coat are two completely different things with different purposes.

To make it crystal clear, I've put together a table. But if you really want to master the subject, head over to my complete guide on priming miniatures where I explain everything in detail.

Key differences between primer and base coat

As you can see, the primer is the invisible glue and the base coat is the first stroke of colour. One doesn't work well without the other.

The world of minis, especially with the boom of 3D printing, is growing enormously. Experts agree that the trick to a good base coat is simple: thin the paint well and apply several thin layers. Just with that, the most typical mistakes are notably reduced. This is something widely discussed in the corridors of events like the Valencia International Miniatures Fair{: rel="nofollow noopener noreferrer" target="_blank"}.

How do I prepare my 3D miniature before the base coat?

Preparing your miniature is, by far, the most important step to achieving a good result with your base coat. Skipping this is buying a one-way ticket to frustration, since a clean, well-cured and primed figure is what separates a professional finish from a disaster.

Look, let's be honest. I'm telling you from experience: a clean, well-cured and primed figure is what separates a professional finish from a disaster. Skipping this is buying a one-way ticket to frustration. So, before you open that pot of paint, your little work of art needs some TLC.

Cleaning and curing: the initiation ritual

Right after printing, your figure will be covered in sticky liquid resin that hasn't cured. It's crucial to remove it completely.

• The first dip: Submerge the miniature in isopropyl alcohol (IPA) with a purity of 99%. Don't leave it still; move it gently or use a soft brush to scrub carefully and reach every corner.

• The second bath (my personal trick): For a truly flawless finish, give it a second quick bath in a container with clean IPA. This will carry away any sticky residue that managed to hold on.

• Air drying: Now, patience. Let the piece dry completely. Don't even think about touching it while it's wet or you'll leave marks!

• The UV tan: Once dry and ready, it's time to harden it completely. Give it a UV light session for around 5-8 minutes. This step (UV curing) solidifies the resin, gives it its final hardness and prevents it from reacting with the paint later on.

If you want to dive deeper into this topic, I have a complete guide on how to print 3D miniatures where I explain the entire process in more detail.

Priming, the step you simply cannot skip

With your miniature clean as a whistle and hard as a rock, we reach the key moment: priming. Acrylic paint doesn't get along well with cured resin at all; it doesn't grip. The primer creates a matte, porous layer that acts like velcro for the paint, ensuring your layers are applied evenly and don't flake off.

You have a couple of options for this:

1. Spray primer: The fastest and most common. It lets you apply an extremely thin and very uniform coat in seconds.
2. Brush or airbrush primer: Here you have much more control. Personally, I love the Vallejo primer, which you can use with both a brush and an airbrush. It leaves a spectacular finish without losing a single detail.

The color of the primer (black, grey, or white) will influence how the final colors look, but if you're just starting out, grey is your best friend. It's the most versatile.

Take note! Many hobbyists already use resin for their custom bases. The starter guide that almost everyone follows is: cleaning with 99% IPA, UV curing for 5-8 minutes, and a neutral grey primer. You can read more about industry trends in forums and event coverage such as those from the Valencia Bonita portal{: rel="nofollow noopener noreferrer" target="_blank"}.

What tools do I need for a perfect base coat?

To achieve a quality base coat you don't need an arsenal of expensive tools, just the right ones and knowing how to use them. With a couple of brushes, a wet palette, good paints, and thinner, you'll have everything you need to get off to a great start without emptying your wallet.

Your first key brushes

Don't go crazy buying sets with dozens of brushes you're never going to use. To master the base coat on miniatures, especially if you're just starting out, two or three is more than enough. My personal recommendation is to focus on these two:

• A medium brush (size 2 or 3): This will be your workhorse, perfect for the larger areas of the miniature, such as armour, robes, or skin.
• A fine brush (size 0 or 1): Your secret weapon for details. With this you'll reach those nooks and small areas where the medium brush simply won't fit.

With this pair, trust me, you've got 90% of the work covered. If you want to explore further, I have a full article on the best brushes for miniatures where I talk about types, shapes, and how to care for them.

The wet palette: your best ally

If there's one tool that changes your life as a painter, it's the wet palette. It's a simple concept — a damp sponge under a special paper — but its effect is incredible. Its purpose is to keep the paint fresh and at the perfect consistency for hours.

Forget the frustration of watching your paint dry on the palette within five minutes. With a wet palette, your mixes will maintain ideal fluidity, something absolutely crucial for applying the thin, smooth coats we're aiming for.

The perfect paint and thinner

Here, quality really does matter. A good acrylic paint has a high pigment concentration, which means it covers better with fewer coats. To start out, I wholeheartedly recommend Vallejo Game Color paints. Their range of colors is outstanding and their consistency is fantastic.

And last but not least, the inseparable companion of painting: thinner. A few drops of Vallejo 70524 thinner in your mix will make the paint flow like silk, preventing the dreaded clumps and brushstroke marks.

How do I apply the base coat without ruining the details?

To apply the base coat without covering details, the key is to thin the paint to a skimmed milk consistency and apply two or three very thin coats. Let each coat dry completely before applying the next one to build a solid, smooth color.

Alright, you've got your mini primed and your paint ready. Now comes the step that can make your work shine — or leave you with a clumpy mess. First things first, and I can't stress this enough: thinning.

My system for not making a mess on the wet palette is simple: I put a drop of paint and, off to one side, a couple of drops of water or thinner. With the tip of the brush, I gradually pull a little water toward the paint until I hit the ideal consistency.

The brush technique: softness above all

Forget wild brushstrokes. The trick is to apply two or three very thin coats, letting each one dry completely before moving on to the next. Load the brush with the thinned mix, remove the excess, and apply the paint with soft, controlled strokes, always in the same direction.

Don't panic! The first coat will look horrible and translucent. That's completely normal. That first coat is just to "stain" the primer. The magic happens with the second one, and sometimes with a third, which will give you that solid, vibrant color you're looking for.

How much do I thin each paint?

Not all paints are the same. A metallic color doesn't need the same amount of water as a yellow, which tends to be more transparent. As a guide, I've put together a table with the thinning ratios I usually use. Take it as a starting point and then adjust to your liking.

Quick dilution guide for beginners

Using quality materials like Vallejo Game Color paints and good brushes, many common mistakes are drastically reduced. And one last tip, which I learned the hard way — with paint-stained fingers: follow a logical order when painting. If you want to know what I mean, I cover it all in my beginner's guide to miniature painting.

What are the most common mistakes when applying the base coat?

The most common mistakes when applying the base coat are not shaking the paint well, using it too thick, and not waiting for it to dry between coats. These mistakes cause lumpy textures, brush marks, and paint lifting when the next coat is applied.

It's happened to all of us: you pick up the brush full of enthusiasm and... disaster. Take a deep breath. These mistakes almost always come down to the three great sins of the beginner painter: impatience, poor dilution, and not preparing the paint. Let's look at how to fix them.

Your paint looks like beach sand

Has this happened to you? You start painting and the texture is lumpy. Don't worry — 99% of the time the solution is simple: you haven't shaken the pot enough. Over time, the pigments sink to the bottom.

The solution is to shake that pot like your life depends on it. Give it a vigorous shake for 30–60 seconds. If the paint is still being stubborn, dropping a stainless steel agitator ball inside works wonders.

You've left more brush marks than Zorro

This is, by far, the most frustrating mistake. If your base coat looks like a plowed field, you have two problems: paint that's too thick and too much pressure when applying it.

The key here is thinning (remember the skimmed milk analogy?). A good thinner like Vallejo thinner 70524 or simply water will help. Then, glide the brush gently. It's much better to apply three thin coats than a single thick one. And if your brush has already seen too many battles, sometimes the best solution is to get yourself some good brushes. Take a look at my guide on how to clean your acrylic paint brushes.

The paint lifts when applying the second coat

Ah, impatience! The textbook mistake. You apply the first coat and immediately go in with the second without thinking. The wet brush reactivates the paint underneath, which hasn't dried yet, and drags it along.

The remedy here is the simplest of all: patience. You need to wait until the previous coat is completely dry to the touch. The time varies, but generally, 5 to 10 minutes is usually enough.

Frequently Asked Questions (FAQ) about the Base Coat

Can I use primer as a base coat?

No, you shouldn't. Vallejo primer is designed for adhesion, while the base coat provides the main color. Using primer as a final color will leave a porous and dull finish.

How many base color coats do I need to apply?

Normally, you'll need between two and three thin coats to achieve solid, even coverage without obscuring details. Remember to let each coat dry thoroughly before applying the next one.

Do I need an airbrush to apply the base coat?

Not at all. Although an airbrush produces very smooth finishes, with good brushes and properly thinned paint, you can achieve a completely professional result with much more control.

What do I do if my base coat has turned out too thick?

If the paint is still wet, remove the excess with a clean brush. If it has already dried, the best option is to strip the miniature with isopropyl alcohol and start over to ensure a good finish.

What colors do I need to get started?

You don't need to buy out the entire store. With a basic set of Vallejo Game Color paints that includes black, white, red, blue, green, and a brown, you can mix almost any color you need.

Conclusion:

In short, the base coat is not just a formality — it's the foundation of your masterpiece! If you do it right, you'll feel confident enough as a veteran to tackle more complex techniques. Trust me, if your foundations are solid, the rest of the building will hold up no matter what you throw at it.

To make your miniature base coat exhibition-worthy, burn these three commandments into your memory:

1. Preparation, always: Clean, cure and print that figure like there's no tomorrow.
2. Thinning is your best friend: Skimmed milk consistency, always!
3. Patience, young Padawan: Apply thin layers and let them dry completely.

With these tips, I guarantee your minis are going to get a spectacular quality boost. Now grab those brushes, your favourite Vallejo Game Color paints and, above all, enjoy the journey!