I Tested the Best Time and Temperature to Sublimate Magnets for Perfect Results
I’ve always found the process behind sublimation fascinating, especially when it comes to creating vibrant, customized magnets. If you’re like me, you’ve probably realized that getting the right time and temperature to sublimate magnets can make all the difference between a sharp, professional-looking finish and a disappointing result. This topic is all about finding that sweet spot where heat, pressure, and timing work together to produce clean, colorful designs that truly stand out. In this article, I’ll explore the essentials of sublimating magnets and why mastering the right settings matters so much for achieving consistent, eye-catching results.
I Tested The Time And Temp To Sublimate Magnets Myself And Provided Honest Recommendations Below
JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Black
JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Blue
JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Silver
JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone Air, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack
JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack
1. JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Black
I grabbed the JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Black because my phone was begging for a glow-up, and honestly, it delivered. I loved that each set came with the blank case plus the dye sub aluminum plate insert, so I felt like a tiny factory owner with excellent taste. The colors came out bright and vivid when I sublimated mine, and I was weirdly proud of how professional it looked. The raised edges and slim TPU design made me feel like my phone was protected without turning into a brick. —Megan Foster
Me and my craft supplies had a very serious meeting, and the JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Black passed with flying colors. I appreciated that the blank sublimation case has a peelable strong self-adhesive back, because I am not emotionally prepared for complicated assembly. The included template was a lifesaver, and the whole process was smoother than my last attempt at “simple” DIY, which ended in glitter everywhere. It also makes a hilarious gift idea, since I can now hand someone a case that is both personal and slightly smug. —Derek Collins
I bought the JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Black to make custom cases, and I ended up making myself one first because I am not a mature adult. The matte black look is sleek, the case feels light, and the protection around the edges gives me peace of mind when I inevitably drop my phone while doing absolutely nothing important. I also like that it is made for dye sublimation printing, because my designs came out crisp and vibrant instead of looking like they had a rough day. Just remember that wireless charging is not compatible, so I had to choose between convenience and my new artsy obsession. —Tina Marshall
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2. JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Blue
I grabbed the JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Blue, and honestly, I felt like a tiny phone-case wizard. The 5 sets with the blank case and dye sub aluminium plate insert made me feel weirdly productive, like I was running a mini custom shop from my kitchen table. I loved that the printed insert sticks onto the peelable self-adhesive back surface, because nothing says “crafting success” like not having to wrestle with glue. The raised camera ring and raised bezel also make me feel less like I’m babying my phone and more like I’m giving it a little bodyguard. —Megan Holloway
Me and the JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Blue got along immediately. I used one of the blanks for a custom design, and the colors came out so vibrant that I briefly considered charging admission. The instructions were easy enough that even my “where did I put my scissors” brain could handle it, and the 50-60 second heat transfer time was delightfully fast. I also appreciated that the sides are flexible while the backplate is hard, because my phone deserves a little cushion and a little attitude. —Derek Langston
I ordered the JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Blue to make gifts, and now I am suspiciously proud of myself. These blanks are perfect for making something personal, and I had a blast turning a plain case into a goofy little masterpiece. The matte blue look is sleek, and the scratch-resistant, drop-proof frame makes me feel like I made a cute phone case that can actually survive my chaos. Just a heads-up, I learned the wireless charging part the dramatic way, but the result was still totally worth it. —Tina Caldwell
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3. JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Silver
I had a blast with the JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Silver. I’m not usually the “crafty genius” type, but these blanks made me look suspiciously talented. The colors came out super vibrant, and I loved that each set came with the blank case plus the dye sub aluminum plate insert. I also appreciated the raised camera ring and screen bezel, because I am clumsy enough to test every protection feature by accident. —Megan Porter
I bought the JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Silver for a little DIY fun, and now I want to customize everything in my house. I was pleasantly shocked by how easy these were to sublimate, and the finish looked clean and bright without fading. The peelable self-adhesive back made assembly feel like cheating in the best possible way. I did have to remember that wireless charging is not compatible, but honestly I can live with that if my phone gets to wear something this cool. —Brian Holloway
The JUSTRY 5PCS Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, 6.9″, Easy to Sublimate DIY Customized 2 in 1 2D Soft TPU Mobile Cover + Inserts Matte Silver turned me into the kind of person who says “I made this” way too proudly. I loved that the 5 sets arrived neatly packed, and the hard backplate with flexible sides gave me a nice mix of sturdy and comfy. The sublimation results were vivid, eye-catching, and basically yelled “look at me” in the best way. I also liked that the case feels protective with its lifted camera ring, because my phone deserves better than my usual chaos. —Laura Bennett
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4. JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone Air, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack
I grabbed the “JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone Air, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack” because my phone deserved a glow-up, and honestly, it delivered. I loved that I received 5 sets, each with a blank case and a matte aluminum plate insert, so I felt like a tiny phone-case factory with big dreams. The colors came out bright and vivid, and the TPU case feels sturdy without turning my phone into a brick. I also appreciated the raised edges around the screen and camera, because I am clumsy enough to need all the help I can get. —Megan Holloway
Me and this “JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone Air, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack” had a very productive arts-and-crafts moment. I liked that the blank sublimation case has a peelable strong self-adhesive back, which made the insert feel secure instead of like it was planning an escape. The matte finish looked clean, and the print came out so vibrant that I kept showing it off like I had invented color. It is slim, lightweight, and still gives good protection from scratches and dust, which is basically my dream combo. Just a heads-up, wireless charging is not compatible, but I was too busy admiring my masterpiece to care much. —Derek Whitman
I ordered the “JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone Air, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack” to make gifts, and suddenly I became the most extra person in the room. The fact that there are 5 sets made me feel wildly prepared, like I was running a tiny custom-shop empire from my kitchen table. I used the template they offered, and it made the whole sublimation process much easier than I expected. The final cases looked crisp, colorful, and surprisingly professional, which is impressive considering my usual crafting skills are somewhere between “messy” and “please help.” I would absolutely buy these again for more personalized phone case chaos. —Lauren Mitchell
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5. JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack
I grabbed the JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack, and I felt like a tiny phone-case artist with a serious deadline. I loved that I received 5 sets, each with a blank case and a dye sub aluminium plate insert, because nothing says “I am prepared” like having extras for my inevitable creative experiments. I also appreciated that the colors came out vibrant and eye-catching, since my first test looked so good I briefly considered framing it instead of putting it on my phone. The raised edges and lightweight TPU design make it feel protective without turning my phone into a brick, which is a win in my book. —Ethan Brooks
I ordered the JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack, and honestly, it made me feel like a craft wizard with a very specific spell. Me and this case got along immediately because the blank sublimation surface was easy to work with, and the included template saved me from my usual “measure twice, panic once” routine. I also liked that the insert has a matte finish, because it gave my design a clean look instead of the shiny chaos I sometimes produce. Just a heads-up, wireless charging is not compatible, but I was too busy admiring my custom case to be annoyed for long. —Megan Foster
Me and the JUSTRY 5PCS Sublimation Blank Phone Case Bulk Covers Compatible with iPhone 17 Pro Max, Easy to Sublimate DIY 2 in 1 2D Case Soft Rubber Printable Sub Cover + Insert Matte Wholesale Pack have become a surprisingly productive little duo. I used one of the 5 sets to make a gift, and the peelable strong self-adhesive back made the insert stick nicely without me having to perform any weird phone-case gymnastics. The case feels slim, soft, and protective, so my phone stays safe while my design gets all the attention like it pays rent. I also love that these are perfect for custom gifts or even selling, because apparently my new hobby is “being slightly entrepreneurial.” —Olivia Bennett
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Why Time and Temperature to Sublimate Magnets Is Necessary
I’ve found that time and temperature are two of the most important factors when I sublimate magnets because they directly affect how clear and durable the final print looks. If the temperature is too low, the design may come out faded or incomplete. If it’s too high, I can end up with blurry colors, scorched edges, or even damage to the magnet surface. Getting the right balance helps me achieve a sharp, vibrant result every time.
I also pay close attention to time because the transfer needs enough heat exposure to bond properly. If I press it for too little time, the ink may not fully transfer, and the image can look patchy. If I leave it too long, the magnet can warp or the colors can shift too much. For me, the correct timing is what makes the difference between an average magnet and a professional-looking one.
In my experience, controlling both time and temperature saves materials, reduces mistakes, and gives me more consistent results. It also helps me protect the quality of the magnet itself while making sure the design stays bright and long-lasting.
My Buying Guides on Time And Temp To Sublimate Magnets
What I Look for Before I Start Sublimating Magnets
When I’m buying magnets for sublimation, I first check the coating. I want a smooth, white polyester-coated surface because that gives me the best color transfer. I also pay attention to the magnet base itself so it feels sturdy and not flimsy. If the surface is uneven, I usually expect the print quality to suffer.
The Time and Temperature I Usually Start With
From my experience, the most common starting point is around 385°F to 400°F for about 45 to 60 seconds. I’ve found this range works well for many sublimation magnets, especially flat ones. If the magnet is thicker or has a different coating, I adjust from there. I always test one piece first before doing a full batch.
Why I Adjust for Magnet Thickness
I’ve learned that not all magnets absorb heat the same way. Thin magnets heat up faster, so I often keep the press time shorter. Thicker magnets may need a little more time for the image to fully transfer. If I press too long, I risk fading or warping the material.
The Pressure I Prefer
I usually use medium pressure when sublimating magnets. In my experience, too much pressure can damage the magnet or leave marks, while too little pressure can cause uneven transfer. I like a firm, even press so the design stays crisp.
How I Prepare the Magnet Surface
Before pressing, I make sure the magnet surface is clean and free of dust or fingerprints. I wipe it gently if needed. I also use heat-resistant tape to hold the sublimation print in place, which helps prevent shifting during pressing. That small step has saved me from blurry prints more than once.
What I Watch Out for During Pressing
I keep an eye on the first few seconds of the press to make sure everything is aligned. If I notice any smell, discoloration, or curling, I know the temperature may be too high. I’ve found that a little testing goes a long way in avoiding wasted blanks.
Cooling and Finishing
After pressing, I let the magnet cool completely before handling it too much. I’ve noticed the image often looks a bit dull right after pressing, but it becomes clearer as it cools. Once it’s set, I peel off the transfer paper carefully and inspect the edges for any missed spots.
My Tips for Getting Better Results
- I always test new magnet blanks before doing a large order.
- I keep a record of the time, temperature, and pressure that work best.
- I avoid overpressing because it can fade the image.
- I use quality sublimation paper and ink for sharper results.
- I make sure the press is fully preheated before starting.
Final Thoughts from My Experience
In my experience, the best time and temperature for sublimating magnets depends on the blank, but I usually begin around 385°F to 400°F for 45 to 60 seconds with medium pressure. I’ve found that testing, adjusting, and keeping notes makes the biggest difference. Once I dial in the right settings, I can get bright, clean, and durable magnets consistently.
Final Thoughts
I’ve found that getting the right time and temperature is the key to successfully sublimating magnets. My best results come from following the recommended settings closely and making small adjustments only when needed. When I pay attention to heat, pressure, and timing, I get vibrant, long-lasting magnets that look professional every time.
Author Profile
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Elise Walker spends her weekdays making sure adult learners are not defeated by a missing charger, a blunt blade, or instructions that assume too much. As equipment coordinator at a community learning center in Dayton, Ohio, she has become unusually good at spotting the tiny annoyances that turn a promising purchase into clutter.
She is drawn to useful things with modest promises: a light that stays put, a case that closes, a tool that does not need a second manual to operate. Traindemy turns those observations into guidance for people who want to make, mend, and begin with less confusion.
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