Ethan Clarke
Applying decals to plastic models is a fun and rewarding part of the modelling process. Decals are thin sheets of printed paper that can make a model come to life. To apply decals correctly, you need to first ensure the surface is smooth. You can do this by applying a thin coat of gloss varnish and letting it dry. Next, cut the decals out from the sheet using a modelling knife and soak them in lukewarm water for around 30 seconds. Then, use a brush to recover the decal and place it on the model. You can finish the model with a coat of matt or satin varnish.
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What You'll Learn
Smooth the surface with varnish
When applying varnish to plastic models, it is recommended to use a thin coat of gloss varnish. Allow this coat to dry thoroughly before proceeding. The purpose of this step is to create a smooth and polished surface that will facilitate the application of the decals. By creating a smooth surface with varnish, you can avoid the formation of tiny air pockets underneath the decals, which would otherwise become highly visible and detract from the overall appearance of your model.
It is worth noting that some modellers choose not to use varnish on their plastic models, as it can alter the final appearance, especially when it comes to metallic tones. However, the majority of modellers agree that varnishing is a crucial step to protect the paint job and ensure the longevity of the model, especially if it is going to be handled frequently. Varnish acts as a protective barrier, safeguarding the paint from oils and dirt transferred from hands during handling.
When selecting a varnish for your plastic model, consider the finish you desire. A glossy varnish can add an unwanted shine to your model, so it is typically recommended to use a matt or satin varnish for the final coat. However, a thin layer of glossy varnish can be useful as a base for the decals, creating the smooth surface needed for their application.
By following these instructions and smoothing the surface with varnish, you will create an ideal base for your decals to adhere to. This step not only enhances the overall appearance of your plastic model but also ensures the protection and longevity of your hard work.
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Cut out decals with a modelling knife
Applying decals to plastic models is a fun and rewarding part of the model-building process. Here is a detailed guide on how to cut out decals with a modelling knife:
Gather the Right Tools
Before you begin, ensure you have the necessary tools ready. You will need a sharp modelling knife, a reservoir with water, and a cloth or paper towel. A sharp knife is essential for precise cutting and to avoid damaging the decals.
Prepare the Decal Sheet
Place the decal sheet on a flat surface. Examine the symbols or designs on the sheet and identify the specific decal you want to cut out. If the decal has pre-cut edges, your task will be easier. However, in most cases, you will need to carefully cut out each decal individually.
Cutting Technique
When cutting the decals, use a gentle and steady hand. Adjust your cuts to preserve as much of the transparent part of the decal as possible. This adjustment will depend on the symbol or design. For example, you can accurately cut the edges of an American 5-point star, but if the star has a circular outline, you must leave the inner transparent part intact. Try to cut as close to the desired shape as possible to minimise the excess transparent material.
Soaking the Decals
Once you have cut out the decal, it's time to soak it in water. Submerge the decal in lukewarm or tepid water for approximately 30 seconds, or until it starts to move freely on the backing paper. Do not force the decal off the paper with a brush, as this may damage it. Instead, wait patiently for it to separate on its own.
Retrieving the Decal
After the decal has separated from the backing paper, use a flat or rounded brush to gently retrieve it from the water. Choose the type of brush based on the size of the decal—use a flat brush for big decals, as it provides better handling, and a rounded brush for small decals, as it offers more control.
Remember to take your time and be precise when cutting out decals with a modelling knife. With careful preparation and execution, you can successfully apply decals to your plastic models, enhancing their visual appeal and realism.
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Soak decals in water
Soaking decals in water is a crucial step in applying them to plastic models. Here is a detailed guide on how to do it effectively:
First, prepare the decals by cutting them out from the sheet. Use a sharp modelling knife or scissors, being careful not to damage the design. Try to preserve as much of the transparent part of the decal as possible, as this will depend on the symbol or image you are applying. For example, you can usually cut the edges of a five-pointed star accurately, but if the star is surrounded by a circle, you will need to keep the inner transparent part intact.
Next, fill a small container or bowl with lukewarm or tepid water. Soak the decal in the water for approximately 10 to 30 seconds. You will know it is ready when it starts to slide off the backing paper smoothly and easily. Be cautious not to over-soak the decal, as this can cause it to come off the backing paper prematurely, making it difficult to handle.
Once the decal is ready, carefully remove it from the water using tweezers or a soft brush. You can use a flat brush for larger decals and a rounded brush for smaller ones, as this will give you more control. If there is excess water on the decal, you can gently dab it with a paper towel, but this may not be necessary.
Now, you can position the decal on your model. Use tweezers or a soft brush to avoid touching the decal with your fingers, as this can leave stains or damage the decal. Gently slide the decal off the backing paper and onto the desired area of your model. You will have a short time to adjust the position and smooth out any air bubbles or excess water before the decal sets.
Finally, after all your decals are applied and completely dry, seal them with a clear coat. This protective layer will not only enhance the appearance of your model but also secure the decals in place, preparing the model for any additional weathering or finishing effects you may wish to add.
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Apply a decal solution
Applying decals can be a delicate process, but it is a crucial step in bringing your plastic model to life. Here is a detailed guide on how to apply a decal solution to your plastic model:
Prepare the Decal Surface:
Before applying the decal, ensure the target area is clean and free from debris, dirt, or any other particles. This is important as any impurities on the surface can affect the decal's adhesion and overall finish.
Smooth the Surface:
Apply a thin coat of gloss varnish to the area where the decal will go and let it dry thoroughly. This step is crucial because decals are thin and tend to dry with a very smooth surface. By creating a smooth base, you prevent the formation of tiny air pockets that can become visible under the decal.
Cut and Soak the Decal:
Carefully cut out the decal from the sheet using a sharp modelling knife or scissors. Try to retain as much of the transparent part as possible, as this will depend on the symbol or design. Once cut, soak the decal in lukewarm water for about 30 seconds or until it starts to move slightly on its backing paper.
Apply Decal Setting Solution:
Using a brush, apply a small amount of setting solution to the area of the model where the decal will be placed. Micro Set and Micro Sol are commonly used and recommended. The solution helps the decal conform to the model's surface, including any uneven areas or details like rivets.
Position the Decal:
Use tweezers or a soft brush to carefully lift and position the decal on the model. Avoid using your fingers as they can leave stains or damage the decal. Once the decal is in position, apply more setting solution on top of it with a brush. Be very gentle and careful not to move the decal during this step.
Remove Excess and Let Dry:
Use a clean cotton ball or soft cloth to absorb any excess water or setting solution from the surface of the model. Also, remove any air bubbles that may have formed under the decal. Finally, let the model sit undisturbed for a few hours until the decals have adequately dried and cured.
Applying decals requires patience and precision, but with these steps, you can achieve a professional and realistic finish on your plastic models.
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Finish with a protective clear coat
Once you've applied your decals, it's important to finish with a protective clear coat to shield your model from damage. This is best done with a varnish. The type of varnish you use will depend on the desired finish of your model. For a realistic finish, a matt or satin varnish is best. Even if your model is intended to be shiny, a gloss varnish can look unrealistic.
You will need to apply two different types of varnish: glossy and satin. You can use a product like Ultra Decal Set and Ultra Decal Fix by AMMO to fix and adapt the decal. This is especially important if the surface is uneven or detailed.
First, apply a thin layer of glossy varnish to the areas where you want to place your decals. This will create a smooth, even surface for the decals to stick to and will prevent the decal from developing a grey or icy effect. Allow the varnish to dry thoroughly before proceeding.
After applying your decals, finish with a coat of matt or satin varnish. This will protect your model and ensure the decals appear painted on. You can then add weathering effects to your model to add extra realism.
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Frequently asked questions
You will need a modelling knife, a reservoir with water, a cloth or paper towel, and two different types of varnish (glossy and satin). You will also need a decal solution like Micro Sol to soften the decal and help it adhere to the model's surface.
First, smooth the surface by applying a thin coat of gloss varnish and let it dry thoroughly. This ensures that the decal adheres smoothly and prevents air pockets from forming.
Cut the decal out carefully with a sharp modelling knife, trying to preserve as much of the transparent part as possible. Soak the decal in lukewarm water for about 30 seconds or until it can be moved off the backing paper.
Use a flat brush for large decals and a rounded brush for small ones to handle the decal gently. Place it on the varnished area of the model and leave it to dry.
Apply the decals after painting the basic colours of the model but before adding any weathering effects. This ensures the decals are integrated into the model and treated consistently.
Remember, always follow the instructions provided with your specific decal solution and varnish products for the best results.
