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So you are dreaming of custom photo plaques with sublimation on slate? We are here to turn your dreams to reality. This article provides a step-by-step guide to select the right slate, prep it, transfer your image, and ensure quality results. Whether you’re a beginner or an experienced crafter, we’ll help you navigate through the process and address common challenges to achieve vibrant sublimated slate pieces. This is your one-stop solution for those stunning custom photo plaques.

Key Takeaways

  • Selecting the right sublimation slate is critical, as the choice between natural and finely machined slate affects the final result due to differences in texture and surface uniformity.
  • Preparation is key to successful sublimation – cleaning the slate, preheating it correctly, and securely taping down the transfer prevent common issues like ghosting and ensure high-quality prints.
  • Proper pressing technique, including appropriate heat and pressure settings, is essential for transferring images onto slate without causing cracking, distortion, or color issues.

Choosing the Right Sublimation Slate Blank

Various sublimation slate blanks

The first step in your sublimation journey is selecting the right slate. This choice plays a pivotal role in the final look and feel of your custom décor. When choosing a sublimation slate blank, consider the nature of the slate, its size, and heat press limitations to ensure the creation of beautiful custom décor and avoid image distortion. The slate should have a polymer-based substance coating applied, this makes it receptive to sublimation ink and serves as a dye sublimation substrate. Slate sublimation blanks come in a variety of sizes, from small coasters to large objects with display stands, offering you a wide range of project options.[1]

Natural stone slates, also known as rock slate, are unique pieces of sedimentary stone with a sublimation-coated surface. They are ideal for transferring full-color photographs and creating keepsakes. Each piece is unique and offers an earthly elegance to your custom décor. Selecting the right sublimation slate is like choosing the perfect canvas for your artwork, it sets the stage for the creative magic that is about to unfold, ensuring a unique and natural presentation.

Natural Stone vs. Finely Machined Slate

A blank photo plaque

The choice between natural stone and finely machined slate will significantly influence your sublimation results. Natural stone, with its distinctive character, lends a unique touch to each piece, as no two stones are exactly alike. However, the unique patterns and surface qualities of natural stone could introduce unpredictable variables in the sublimation process.

On the other hand, finely machined slate features a more uniform surface, facilitating more consistent sublimation results. The even surface of finely machined slate minimizes potential unwanted deviations or inconsistencies in your final custom photo plaques. It’s like having a well-tuned instrument, finely machined slate offers a predictable and reliable performance.

Beveled Edges and Imperfect Edges

The edges of your slate can significantly impact the final sublimation results. Beveled edges, for instance, are a feature of finely machined slate designed to provide an extremely flat imprint surface for images. These edges, which also features chiseled beveled edges, enhance the natural presentation, allowing images to flow beautifully across the surface. It’s like the perfect frame for your masterpiece, enhancing its earthly elegance.

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On the contrary, imperfect edges on natural sedimentary stone slates can cause distortion of full-color photographs during the sublimation process. However, this is not necessarily a disadvantage. The imperfect edges can add a rustic charm to your pieces, turning them into valuable keepsakes.

Preparing Your Slate for Sublimation

A slate displayed inside a heat press machine

When starting your sublimation process, it’s vital to start by preparing your slate. Just like a chef preparing ingredients for a recipe, you need to ensure that your slate is clean and ready for sublimation. A clean sublimation slate significantly influences the ultimate print quality. A recommended method for cleaning the slate is using a lint roller. It may take multiple passes over the slate surface to ensure that all the dirt and dust are effectively removed. Think of it as priming a wall before painting, a clean canvas ensures a flawless application of color.

Also, it’s important not to overlook the preheating of your slate in the preparation process. This ensures a consistent temperature across the slate’s surface, which is key to achieving high-quality sublimation results. The recommended temperature for preheating the slate is 400°F (204°C), and the slate should be preheated for 420 seconds to prepare it for the sublimation process. Just as one preheats an oven before baking, preheating your slate ensures the optimal temperature for your process.

Applying Heat Resistant Tape

In your sublimation toolkit, one of the most essential items is heat-resistant tape. This tape secures the sublimation print to the slate during the heat press process, preventing ghosting which appears as double or blurred images. To secure the sublimation print effectively, drape the tape over the edge of the slate onto the print, ensuring it is gripped firmly on all four sides.

Correct use of heat-resistant tape on hard material substrates like slate can minimize shadowing around the transferred image, resulting in a clear and precise sublimation result. This tape acts as the anchor in your sublimation process, ensuring your image stays in place during the heat press process.

Preheating the Slate

The preheating process is vital in preparing your slate for sublimation. Preheating the slate ensures a consistent temperature across its surface, which is key to achieving high-quality sublimation results. The recommended temperature for preheating the slate is 400°F (204°C), and the slate should be preheated for 420 seconds to prepare it for the sublimation process.

It’s like warming up before a workout, preheating prepares the slate for the intense heat press process that follows.

Creating Your Sublimation Print

Operation of graphic design software on computer screen

The artistry of creating your sublimation print involves the judicious selection of the correct image, accurate sizing, and perfect placement on your slate. Using the highest quality print settings and the slowest speed settings prevents the ink from printing too fast on the sublimation sheet, ensuring the best possible print quality. It’s also crucial to mirror your image before printing to ensure it transfers correctly onto the substrate. It is also recommended to understand why your sublimation printer is failing to print correct colors.

To avoid any issues with image quality or color, always follow these steps before proceeding with sublimation paper:

  1. Print a test copy on regular paper.
  2. Check for any issues with the image quality or color.
  3. Make any necessary adjustments before printing on the sublimation paper.

This step is similar to creating a preliminary sketch before a painting, and it guarantees a flawless final masterpiece. For those of you interested in photo printers, there are a range of sublimation photo printers available. The best sublimation printer might vary depending on your needs, for example those looking for a printer for stickers and sublimation.

Choosing the Right Image

The success of your sublimation project is heavily influenced by your choice of image. Here are some tips to consider:

  • Use high-resolution images to avoid pixelation, especially for larger prints.[2]
  • The recommended file types for sublimation printing include PNG, JPEG, SVG, PDF, PSD, EPS, and TIFF.[3]
  • Avoid using images with excessive shadows or highlights, as these may not transfer well during the high heat and pressure sublimation process.

Just as the right brush can affect a painting’s outcome, the correct image choice can significantly influence your final piece.

Sizing and Placement

Once you have chosen your image, the next step is to adjust the size and placement of the design. This step requires careful consideration of the natural imperfections in the slate to ensure a more desirable final appearance of the sublimated slate. Printing the design slightly larger than the slate and leaving a margin around the edges helps cover any white areas and accommodates for slight shifts during pressing.

Giving careful attention to margins and size settings while preparing the image guarantees a good fit on the slate. Correct alignment of the image is crucial to prevent misplaced images or text and to minimize distortion of important elements. Just as the arrangement of furniture can enhance a room’s aesthetic appeal, the right placement of the image can enhance the overall look.

Pressing Your Sublimation Print onto Slate

A slab of slate

With the slate selected, prepared, and the sublimation print created, we can proceed to the pressing stage. Pressing your sublimation print onto slate requires careful attention to pressure, heat, and time. Medium pressure is essential when pressing sublimation prints onto slate to prevent cracking the material. However, maintaining medium pressure can be a challenge with heat pressing devices such as an EasyPress.

When sublimating with an EasyPress, it is best to apply firm pressure for optimal results. Just as you would press a flower between the pages of a book, applying the right pressure ensures a perfect imprint without harm to the material.

Heat Press Settings

In the sublimation process, heat press settings are of utmost importance. The recommended temperature setting for heat pressing sublimation on slate is generally 400°F (204°C), although some recommend a slightly lower temperature of 356°F for the same process. Small coaster-sized slate pieces usually require a press time of 4 minutes, while larger slates may need up to 9 minutes under heat.

Continuous firm pressure during the heat press process is important to achieve crisp image results and avoid distortions. To prevent color distortion or overcooking of colors on the slate, maintain even temperature and pressure during heat pressing, and consider reducing pressing time if colors are best before the end of the recommended time. Similar to baking a cake, the right temperature and time ensure a perfect outcome.

Pressing Techniques

For successful sublimation on slate, it is essential to master the correct pressing techniques. Using a high temp Nomex Felt pad, or a green pad during the pressing process, helps to distribute heat evenly across the surface of slate blanks, especially important for those with beveled edges or an uneven surface.

The preferred pressing setup should layer:

  1. Protective paper
  2. The slate blank
  3. The sublimation print
  4. Another protective paper
  5. A green pad on top

This ensures even heat distribution throughout.

Tiles should be placed face down on the press when heating from the back to achieve better surface contact with the entire surface, including the edges, depending on the desired effect such as maintaining a white border around smaller images. To mitigate the risk of image distortion due to uneven temperatures in the heat press, a heat conductive mat can be used to aid in distributing the heat more evenly across the slate.

Just as perfecting a dance routine leads to a flawless performance, the right techniques ensure a successful sublimation process.

Caring for Your Finished Sublimation Slate

Cleaning solution next to a slab of slate

Congratulations on creating a stunning custom sublimation slate! Now let’s focus on ensuring your masterpiece is well-preserved. Regular cleaning of the sublimation slate is recommended to maintain the vibrant colors and sharp details of the sublimated image. When cleaning, follow these steps:

  1. Use a soft cloth lightly dampened with water or a mild cleaning solution.
  2. Wipe the slate gently to avoid scratching the image.
  3. Avoid using harsh chemicals or abrasive materials on the sublimated surface to prevent damage.

Just as a precious painting needs proper care to maintain its vibrancy, the right care for your masterpiece ensures it remains beautiful for years to come.

Cleaning Your Sublimation Slate

A bottle of mild soapy solution

For the longevity of your sublimation slate, maintaining its cleanliness is essential. Here are some tips for cleaning your slate:

  1. Use a soft, lint-free cloth or microfiber to gently clean the surface of the slate.
  2. For general cleaning, use warm water or a mild soapy solution and wring out the cloth well before wiping the slate.
  3. Avoid using abrasive cleaners, bleach, or other harsh chemicals that can damage the image.

After cleaning, ensure the slate is completely dry before displaying; dabbing softly with another dry, lint-free cloth can help. Just as a precious gem thrives when pampered, the right cleaning techniques will keep your slate sparkling.

Displaying Your Sublimation Slate

The display of your finished sublimation slate is indeed an art. Sublimation slates are often accompanied by accessories that facilitate their display. The 7.6’ x 7.6’ Sublimation Photo Slate Rock Plaque comes with black plastic stands and a fitted box for display purposes. Sublimation slates can be displayed using different sizes of easels or stands that match the size of the specific slate piece.

Display options for sublimation slate projects include easel display and hanging configurations, providing versatility in how the finished piece can be showcased. Just as the right display enhances the beauty of a curated gallery, it can also help you create beautiful custom décor with your masterpiece.

Troubleshooting Common Sublimation on Slate Issues

Like any creative process, you may face some hurdles along the way. When working with sublimation on slate, common issues include white edges, shadowing, and image distortion. White edges on sublimated slates can be caused by jagged edges and pressing too close to the edge of the heat press. Preventing white edges can be achieved by avoiding sublimation near jagged edges and ensuring the design does not extend too close to the edges of the heat press.

Understanding these common issues is like solving a puzzle, helping you navigate the sublimation process more smoothly.

White Edges and Shadowing

White edges and shadowing are common issues in sublimation on slate. Shadowing during sublimation can be caused by the movement of transfer paper when the heat press is opened or closed. To prevent shadowing, remove the transfer paper immediately after the sublimation process is completed.

Similarly, white edges can be avoided by ensuring the design does not extend too close to the heat press’s edges and not sublimating near jagged edges. Just as perfecting a piece of music requires understanding the nuances, this knowledge helps you create a harmonious final piece.

Image Fading or Distortion

An example of a faded image

Another common issue is image fading or distortion. Overheating the sublimation ink or slate can cause colors to appear dark or incorrect, which may result from areas being pressed multiple times. The natural texture of slate can exacerbate image distortion, particularly affecting the transfer quality of full-color photographs. Overheating and image integrity on the slate can be maintained by regulating temperature and press time.

Choosing designs that are less intricate or detailed may result in better quality transfers on textured slate surfaces. Just as tuning a musical instrument leads to a perfect performance, the right adjustments can lead to a perfect sublimation result.


You’ve embarked on a creative journey through the fascinating world of sublimation on slate. From selecting the right slate blank to preparing it for sublimation, creating your sublimation print, pressing it onto the slate, caring for your finished piece, and troubleshooting common issues, every step of the process has its unique charm and challenges. But the result is worth it – a stunning custom photo plaque that captures a cherished image in a truly unique and beautiful way.

Embrace the process, learn from each step, and don’t be discouraged by any challenges along the way. Remember, every masterpiece was once a blank canvas. With the right knowledge, tools, and a dash of creativity, you can transform a simple piece of slate into a stunning work of art.

Frequently Asked Questions

Are sublimation slates weatherproof?

Yes, sublimation slates are weatherproof, water-resistant, UV-resistant, and resistant to wear and tear, making them a reliable choice for durable and long-lasting decoration.

How do you print on slates?

You can print on slates by preheating the slate for 1 minute, then placing the image on it and pressing with a silicon sheet. Finally, print at 210 degrees for 8 minutes and let the paper dry before pressing.

What temperature do you sublimate slate?

To sublimate slate, you should use a recommended temperature of 375 degrees Fahrenheit for about 5 minutes using a swing heat press. Remember to ensure proper ventilation and use heat-resistant gloves and mats to handle the slate.

What is the best type of slate for sublimation?

Either natural stone or finely machined slate can be used for sublimation, depending on the desired appearance of your final piece. Choose based on the look and feel you want.

How do I clean my sublimation slate?

Clean your sublimation slate by gently wiping it with a soft cloth dampened with water or a mild cleaning solution, and avoid using abrasive cleaners or harsh chemicals.


  1. King, H. M. (n.d.). Slate: Metamorphic Rock – Pictures, definition & more. https://geology.com/rocks/slate.shtml
  2. How to pixelate an image in Photoshop – Adobe. (n.d.). https://www.adobe.com/creativecloud/photography/discover/pixelate-image.html
  3. Nichols, J. (2023, August 22). 10 Types of Image File Extensions and When to Use Them. Hubspot. https://blog.hubspot.com/insiders/different-types-of-image-files
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