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 smooth, opaque canvas — the foundation on which all your highlights, shadows, and details will be built. Mastering it is essential for a truly professional finish.

Let's get into it, future brush master! If you've landed here, it's because you're tired of your miniatures looking like a beginner's first attempt and you want them to look like genuine works of art. In my experience, it all starts with a solid base coat on miniatures — and I'm going to show you exactly how to nail it.

What is a base coat on miniatures and why does it matter so much?

The base coat is the first solid, even layer of colour you apply over your primed miniature. Think of it as the foundation of your paint job — its job is to cover the primer and establish the main tone across each area, setting up the surface for all your shading, highlighting, and detailing to come.

Imagine building a house. The base coat is the walls and foundations. Without a good base coat, your colours will look patchy, coverage will be all over the place, and your frustration will grow faster than an orc horde.

From experience, I can tell you that most beginner mistakes trace back to a poorly done base coat. Either it goes on too thick and buries all those gorgeous sculpted details, or the wrong colour is chosen from the start.

My golden rule: Don't treat the base coat as a boring box to tick. It's your first real artistic decision — and the one that shapes everything that comes after!

Hold on — isn't that the same as primer?

Beginner mistake number one! No, they're not the same thing. It's an incredibly common mix-up, but primer and base coat are two completely different steps with completely different jobs.

I've put together a quick table to make it crystal clear. But if you really want to get to grips with the topic, head over to my complete guide to priming miniatures where I break it all down in detail.

Key differences between primer and base coat

As you can see, primer is the invisible glue and the base coat is your first real stroke of colour. Neither one works properly without the other.

The miniatures hobby, especially with the 3D printing boom, is growing at an incredible pace. Experts agree that the secret to a great base coat is straightforward: thin your paint properly and apply several thin layers. That simple approach alone dramatically reduces the most common mistakes — something that comes up constantly at events like the Valencia International Miniatures Fair{: rel="nofollow noopener noreferrer" target="_blank"}.

How do I prepare my 3D miniature before base coating?

Preparing your miniature is, by far, the most important step for achieving a great base coat result. Skip it and you're setting yourself up for frustration — a clean, fully cured, and primed figure is what separates a professional finish from a complete mess.

Let's be honest here. Speaking from experience: a clean, fully cured, and primed figure is what separates a professional finish from a complete mess. Skipping this step is a one-way ticket to frustration. So before you crack open that paint pot, your little work of art needs some TLC.

Cleaning and curing: your essential first ritual

Right after printing, your figure will be coated in sticky, uncured liquid resin. Removing it completely is absolutely critical.

• First wash: Submerge the miniature in isopropyl alcohol (IPA) at 99% purity. Don't just let it sit — gently agitate it or use a soft brush to carefully scrub into every nook and cranny.

• Second wash (my personal tip): For a truly flawless finish, give it a quick second wash in a fresh container of clean IPA. This will lift any stubborn sticky residue that survived the first round.

• Air dry: Now, patience. Let the piece dry completely. Whatever you do, don't touch it while it's still wet — you'll leave fingerprints!

• UV cure: Once it's fully dry, it's time to harden it completely. Give it a UV light session for around 5–8 minutes. This UV curing step solidifies the resin, locks in its final hardness, and prevents it from reacting with your paint down the line.

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

Priming — the step you simply cannot skip

With your miniature squeaky clean and rock solid, we come to the crucial moment: priming. Acrylic paint and cured resin don't play well together — paint just won't adhere properly to bare resin. Primer creates a matte, porous layer that acts like velcro for your paint, ensuring your coats go on evenly and actually stay put.

You've got a couple of options here:

1. Spray primer: The fastest and most common method. It lets you apply an ultra-thin, even coat in seconds.
2. Brush-on or airbrush primer: This gives you far more control. Personally, I love Vallejo primer, which works great with both a brush and an airbrush. It leaves a stunning finish without obscuring a single detail.

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

Pro tip! Many hobbyists are already using resin for their custom bases. The starter workflow most people follow is: clean with 99% IPA, UV cure for 5–8 minutes, and apply a neutral grey primer. You can read more about industry trends on hobby forums and event coverage like that of Valencia Bonita{: rel="nofollow noopener noreferrer" target="_blank"}.

What tools do I need for a perfect base coat?

Getting a quality base coat doesn't require an expensive arsenal of tools — just the right ones and knowing how to use them. A couple of brushes, a wet palette, good paints, and a thinner are all you need to get started without breaking the bank.

Your essential starter brushes

Don't go overboard buying sets with dozens of brushes you'll never touch. To nail the base coat on miniatures — especially as a beginner — two or three brushes 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 detail work. This is what you'll use to reach those tight recesses and small areas where a medium brush simply won't fit.

With just these two, trust me, you've got 90% of the job covered. If you want to go deeper, I've written a full article on the best brushes for miniatures covering types, shapes, and how to care for them.

The wet palette: your ultimate game-changer

If there's one tool that genuinely transforms your painting experience, it's the wet palette. The concept is simple — a damp sponge beneath a special paper — but the results are remarkable. Its job is to keep your paint fresh and at the perfect consistency for hours on end.

Say goodbye to the frustration of watching your paint dry out on the palette within minutes. With a wet palette, your mixes stay fluid and workable — something absolutely essential for applying the thin, smooth coats we're aiming for.

The right paint and thinner

This is where quality really matters. A good acrylic paint has a high pigment concentration, which means better coverage in fewer coats. To get started, I wholeheartedly recommend Vallejo Game Color paints. The colour range is outstanding and the consistency is excellent.

And last but not least, the painter's best friend: thinner. A few drops of Vallejo 70524 thinner in your mix will make the paint flow like silk, preventing those dreaded clumps and brushstrokes.

How do I apply a basecoat without losing detail?

The key to basecoating without obscuring details is thinning your paint to a skimmed milk consistency and applying two or three thin coats. Let each coat dry completely before applying the next to build up a smooth, solid colour.

Right, so your mini is primed and your paint is ready. Now comes the step that can make or break your work. First things first — and I can't stress this enough — it's all about thinning.

My system for getting it right on the wet palette is simple: I put down one drop of paint and, next to it, a couple of drops of water or thinner. Then I use the tip of my brush to gradually drag a little water into the paint until I hit that ideal consistency.

Brush technique: light touch, always

Forget heavy-handed strokes. The trick is to apply two or three thin coats, letting each one dry completely before moving on to the next. Load your brush with the thinned mix, wipe off the excess, and apply the paint with light, controlled strokes, always working in the same direction.

Don't panic! The first coat will look patchy and transparent. That's completely normal. It's just there to "stain" the primer. The magic happens with the second coat — and sometimes a third — which will give you that solid, vibrant colour you're after.

How much should I thin each paint?

Not all paints are created equal. A metallic colour doesn't need as much water as a yellow, which tends to be far more transparent. As a rough guide, I've put together a table with the thinning ratios I typically use. Think of it as a starting point and adjust from there.

Quick Thinning Guide for Beginners

Using quality materials like Vallejo Game Color paints and a good set of brushes will cut out a lot of common mistakes straight away. And one last tip I learned the hard way — always follow a logical painting order. If you want to know exactly what I mean, I cover it all in my beginner's guide to painting miniatures.

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

The most common base coat mistakes are not shaking the paint properly, applying it too thick, and not letting it dry fully between coats. These lead to grainy texture, visible brushstrokes, and paint lifting when you add the next layer.

We've all been there — you pick up the brush full of enthusiasm and... disaster. Take a breath. These problems almost always come down to the three classic beginner mistakes: impatience, poor thinning, and skipping paint prep. Let's look at how to fix each one.

Your paint looks like wet sand

Sound familiar? You start painting and the texture is all grainy and rough. Don't panic — 99% of the time the fix is simple: you haven't shaken the pot enough. Over time, the pigments settle to the bottom.

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

You've Left More Brush Marks Than a House Painter

This is, by far, the most frustrating mistake of all. If your base coat looks like a ploughed field, you've got 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 even plain water will do the trick. Then, glide the brush on gently. It's far better to apply three thin coats than one thick one. And if your brush has already seen too many battles, sometimes the best solution is to pick up some quality brushes. Check out my guide on how to clean your acrylic paint brushes.

The Paint Lifts When You Apply the Second Coat

Ah, impatience — the classic rookie mistake. You put down the first coat and dive straight into the second without thinking. The wet brush reactivates the paint underneath, which hasn't dried yet, and you drag it all off.

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

Frequently Asked Questions (FAQ) About Base Coating

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 colour. Using primer as your final colour will leave a porous, dull finish.

How many base coats do I need to apply?

Typically, you'll need two to 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 a base coat?

Not at all. While an airbrush produces very smooth finishes, with a good set of brushes and properly thinned paint, you can achieve a completely professional result with far greater control.

What do I do if my base coat has gone on too thick?

If the paint is still wet, remove the excess with a clean brush. If it's already dried, your best bet is to strip the miniature with isopropyl alcohol and start over to ensure a clean, quality finish.

What colours do I need to get started?

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

Conclusion:

To sum up, the base coat isn't just a formality — it's the foundation of your entire paint job! Get it right and you'll have the confidence to tackle more advanced techniques. Trust me, if your foundations are solid, everything built on top will hold up to anything you throw at it.

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

1. Preparation is everything: Clean, cure, and prime that miniature like there's no tomorrow.
2. Thinning is your best friend: Skimmed milk consistency, every single time!
3. Patience, young Padawan: Apply thin coats and let them dry completely.

With these tips, I guarantee your minis are going to see a spectacular leap in quality. Now grab those brushes, your favourite Vallejo Game Color paints and, most importantly, enjoy the journey!