
Watery paint can be frustrating to work with, especially when it comes to painting miniatures. There are several reasons why your paint might be too watery, such as the type of paint, the surface you're painting on, or the quality of the paint. If your paint is too watery, there are a few things you can try to fix it. One common solution is to stir or shake the paint to mix it thoroughly. If that doesn't work, you can try adding a paint thickener or a dry medium to adjust the consistency. It's important to add these substances gradually and test the paint as you go to ensure you don't add too much. Additionally, the way you load your paintbrush can impact the paint's behaviour, so be mindful of how much paint and water are on your brush.
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What You'll Learn
- Ensure the paint is well-mixed by stirring with a toothpick or cocktail stick
- If the paint is old, it may have deteriorated and become watery
- Use a different liquid to thin the paint, such as hydroxyethyl cellulose or paint thinner
- If using water, ensure it is non-bubbling and not too hard
- Apply several thin layers of paint instead of one thick layer

Ensure the paint is well-mixed by stirring with a toothpick or cocktail stick
If your paint is too watery, there are several ways to thicken it. One easy method is to simply stir the paint thoroughly with a long wooden stirrer, a toothpick, or a cocktail stick. If your paint is stored in a bottle, you can try shaking it vigorously.
If stirring or shaking doesn't work, you can try adding a dry medium to thicken the paint. For oil-based paints, you can make a thickening paste by melting beeswax into turpentine over a double boiler and then mixing this into your paint a little at a time until you reach your desired consistency. For latex paints, you can use hydroxyethyl cellulose as a thickening agent, but be careful not to add too much, as this can make your paint too thick to use.
Watery paint can be caused by paint sitting around for too long, especially if it is latex or acrylic paint. Oil paints are known to separate after being unused for extended periods, resulting in excess oil that may appear watery. Watery paint can also be caused by using too much water to thin the paint or by not properly shaking or stirring the paint before use, especially if it has been sitting on a shelf for a while.
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If the paint is old, it may have deteriorated and become watery
In this case, there are several ways to thicken watery paint. One method is to use dry mediums, which are easy to use by simply adding them to the paint and stirring. Another option is to create a beeswax and turpentine paste, which can be mixed into oil-based paints. This method requires working in a well-ventilated area due to the strong fumes of turpentine.
If you are dealing with latex paint, you can use hydroxyethyl cellulose as a thickening agent. Transfer the watery paint to a large bucket and gradually add the hydroxyethyl cellulose, stirring continuously until you achieve the desired consistency.
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Use a different liquid to thin the paint, such as hydroxyethyl cellulose or paint thinner
If your paint is too watery, you can use hydroxyethyl cellulose (HEC) to thicken it. HEC is a water-soluble cellulose derivative that is commonly used in coatings, adhesives, and building materials. When adding HEC to paint, it's important to pay attention to the dissolution process and the timing of its addition. The HEC powder should be dissolved in water at a temperature between 30°C and 40°C to avoid degradation and clumping. Sufficient stirring is required during dissolution, using high-shear mixing equipment or a homogenizer. The amount of HEC added to the paint should not exceed 1/4 of the amount of paint, as too much thickener can make the paint too thick to use.
Another option for thinning paint is to use a paint thinner. Paint thinners can be used to thin oil-based paints and can help to remove paint from brushes, palettes, and other surfaces. When thinning paint with a thinner, the general ratio is 1 part thinner to 3 parts paint. It's important to mix the paint thoroughly and test it on a flat surface to ensure the desired consistency is achieved. There are also natural alternatives to paint thinners, such as citrus-based solvents or spike lavender oil, which can be used to thin oil paints and clean paint off brushes.
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If using water, ensure it is non-bubbling and not too hard
If your paint is too watery, it may be unusable. The paint won't adhere correctly, and the colour will be weak. Dripping is a common side effect of watery paint. If you are thinning your paint, the most common liquid to use is water. However, if your tap water is too hard, meaning it contains a lot of minerals, it might affect your colours and how the paint behaves. In this case, it is better to use non-bubbling water from the supermarket.
There are several other ways to fix watery paint. Firstly, check that the surface you are painting has been prepared well. This can be an issue on smooth surfaces like bare plastic or thick/glossy paint surfaces. It can also occur on greasy surfaces that might need cleaning. Secondly, ensure that your paint is mixed properly. If you are shaking your paint to mix it, try using a mixing ball or stir it with a cocktail stick or toothpick. If you are thinning your paint, ensure you are not getting too much paint or water up into the bristles of your brush.
If you are using oil-based paint, a paint thinner may fix the problem. Add 1 part paint thinner for every 3 parts of paint. Mix the paint thoroughly and test it on a flat surface. If the consistency is still not ideal, add more paint thinner and mix again.
If your paint is latex or acrylic, it may have gotten watery from sitting around for too long. In this case, you can thicken your paint with hydroxyethyl cellulose. Transfer your watery paint into a large bucket and gradually add the hydroxyethyl cellulose, stirring and observing the thickness as you go.
If your paint is old, it may be better to return it for a replacement.
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Apply several thin layers of paint instead of one thick layer
If you're working with watery paint, there are several methods you can use to adjust its consistency. One way to avoid issues with watery paint is to apply several thin layers of paint instead of one thick layer. This method ensures that the details of the miniature remain visible, as a single thick layer can obscure them.
When applying the first coat of paint, use a minimal amount of paint on your brush to avoid flooding the miniature. The paint should neither pool nor run, as this indicates that it is too thin. If the paint is too diluted, it will become wash-like and may run, especially if the undercoat is not properly applied.
If you are using a brush, ensure that it is not overloaded with paint. If the brush bristles are not visible, or the brush is bent outwards, there is too much paint on the brush. Before applying the paint, wipe off the excess on a paper towel. The paint should leave defined strokes with a sharp, solid line of colour.
By applying multiple thin coats, you can build up the desired level of pigmentation while maintaining the visibility of the miniature's details. This method may take more time due to the need for each layer to dry before applying the next, but it can help achieve a more precise and detailed finish.
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Frequently asked questions
There are several reasons why your mini paint might be too watery, and there are several solutions to this problem. Firstly, if your paint is new, it may have separated while sitting on the shelf. Try stirring it with a cocktail stick, a toothpick, or something similar to ensure that the pigment is mixed properly. If this doesn't work, you can try shaking the container to see if that helps. If your paint is old, it may have deteriorated and become unusable. In this case, you may need to buy a new tin of paint. If you want to thicken your paint, you can try adding a dry medium, hydroxyethyl cellulose, or a mixture of beeswax and turpentine, depending on the type of paint you are using.
If your paint is too watery, it will not adhere to the surface correctly. It will be thin and will not cover the surface well, requiring multiple coats. You may also notice run lines or dripping.
If your paint brush looks bent outwards or if the bristles are not visible, your paint is too thick. If there is barely any colour visible on your brush, your paint might be too thin.
If your paint is too thick, you can try thinning it with water or paint thinner.
When thinning your paint, be careful not to use too much water, as this can affect the colour and behaviour of the paint. It can also cause the paint to dry too quickly, changing its consistency.











































