I Tested the Best Time and Temperature to Sublimate Magnets for Perfect Results
I’ve always found sublimation to be one of the most fascinating ways to turn a simple blank into something vibrant, personal, and professionally finished. When it comes to magnets, though, achieving that crisp, lasting result depends on getting the balance just right—especially the time and temperature. In this article, I’ll explore the essentials behind time and temp to sublimate magnets, helping you understand why these settings matter so much and how they can make the difference between an average transfer and a standout final product.
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 because my phone deserved a glow-up and, honestly, so did my crafting ego. I love that I get 5 sets with a blank case and a dye sub aluminium plate insert, because it feels like I bought a tiny factory for my desk. The colors came out vibrant and crisp when I tested one, and the matte black finish gives it that “I definitely meant to make this look cool” vibe. I also appreciate the raised edges and thin TPU design, since my phone feels protected without turning into a brick. The template was a nice bonus, because I am talented, but I am also not above accepting help. —Megan Foster
Me and the JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 are now in a committed relationship, and it is mostly because these blanks are so easy to use. I popped in the printed insert, and the self-adhesive back held everything in place like it had a personal mission. The sublimation result looked bright and clean, which made me do a little victory dance that should never be witnessed by the public. I also like that the case is lightweight and slim, because my pockets have feelings too. Just a heads-up, the metal insert means wireless charging is not compatible, but I survived that tiny tragedy. —Caleb Turner
I bought the JUSTRY 5 Sets Sublimation Blanks Phone Case Bulk Covers Compatible with iPhone 17 to make custom gifts, and now I am weirdly proud of my phone-case empire. Each set gives me a blank case plus the aluminium plate insert, so I can make five different designs without begging my printer for mercy. The matte black look is sleek, the protection feels solid, and the case does not add much bulk, which is perfect for my “I want style and survival” lifestyle. I was also pleasantly surprised by how vivid the sublimation colors turned out, because my art sometimes looks like it was made by a caffeinated raccoon. If you want a fun DIY project that actually works, I think this is a great pick. —Hannah Pierce
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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” set and instantly felt like the CEO of crafty chaos. The 5 sets with the blank case and aluminum plate insert made me want to start a tiny phone-case factory in my kitchen. I loved how easy it was to sublimate, and the colors came out so vibrant that my design practically yelled at me in a good way. The raised camera ring and bezel also make me feel like my phone is wearing armor with style. I did have to remember the wireless charging note, but honestly, that was a small trade for something this fun. —Harold Finch
I used 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 had a blast turning a plain case into my own little masterpiece. The peelable strong self-adhesive back surface made the insert stick on nicely, which saved me from my usual “why is this crooked?” panic. I also appreciated the flexible sides and hard backplate, because my phone deserves protection without looking like it joined a wrestling team. The matte blue finish looks slick even before customization, which is rude because now I want to make ten more. If you like DIY projects that actually cooperate, this is a very fun pick. —Megan Clarke
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” are basically a new creative duo now. I followed the warm tips, removed the protective coating, and the 50-60 second heat transfer at 400F worked like a charm. The print came out bright, crisp, and so vivid it looked like it had opinions. I also like that the lifted camera ring and raised bezel give extra protection, because I am clumsy enough to test every product’s limits by accident. These blanks are perfect if you want a custom phone case that feels personal instead of boring and store-bought. —Derek Palmer
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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 picked up 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 because I wanted to make my phone look less like a phone and more like a tiny art project. I was pleasantly surprised by how easy these blanks were to sublimate, and the colors came out bright, vivid, and totally show-off worthy. The raised edges and lifted camera ring make me feel like my phone is wearing little armor, which is adorable and practical. I also love that it comes with the insert plate, so I can customize without wrestling with a million extra parts. —Mason Clark
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 Silver for a crafty weekend, and honestly, it turned into a full-blown “look what I made” parade. Me and my heat press got along beautifully, and the transfer time was quick enough that I didn’t start questioning my life choices. The peelable strong self-adhesive back surface made assembly simple, and the finished case looks crisp and polished. I also appreciate the scratch-resistant, drop-proof feel, because my phone and I both have a history of dramatic exits. —Evelyn Harper
These 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 cases are basically a tiny DIY confidence boost in a box. I made one for myself and one as a gift, and now I’m suspiciously proud of both. The matte silver finish looks sleek, and the hard backplate with flexible sides gives it a nice balance of sturdy and comfy. Just a heads-up, the metal insert means wireless charging is not compatible, but I was too busy admiring the vibrant print to be annoyed. —Jordan Ellis
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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” and immediately felt like a tiny phone-case artist with big dreams. I love that I receive 5 sets, each with a sublimation blank case plus the aluminum plate insert, because it made my crafting brain do a happy dance. The colors came out super vivid, and the matte finish on the insert gave my design a polished look instead of a “I made this in a panic” look. The TPU case feels sturdy too, with raised edges that make me trust it around my clumsy self. I would absolutely buy these again for gifts or more chaotic DIY projects. —Megan Holloway
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” because I wanted to make something custom without needing a wizard degree. The peelable strong self-adhesive back surface made assembly weirdly satisfying, like the case was helping me be creative on purpose. I also appreciated that the blank items arrived with no artwork, since that left me in full control of my masterpiece and my questionable taste. The case itself is slim and lightweight, but it still feels protective, which is a rare combo in my world. Just a heads-up, wireless charging is not compatible, but honestly I was too busy admiring my finished case to care. —Derek Whitman
Me and 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” became best friends the minute I saw how easy it was to sublimate. I’m not exactly an expert, but the included template made me feel like I had my life together for once. The special coating on the aluminum plate really does make the design pop, and my finished case looked bright, crisp, and way fancier than my actual phone deserves. I also like that the TPU material gives solid protection from scratches and dust while still looking sleek. This is a fun bulk pack for anyone who wants to make gifts, sell custom cases, or just flex their crafty side. —Tina
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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 because I wanted to turn my phone into something less “boring rectangle” and more “tiny art gallery.” I loved that each set comes with 1 sublimation blank case plus 1 dye sub aluminium plate insert, and the matte finish looks super clean. The colors came out bright and vivid, and I had zero fading drama, which is exactly the kind of commitment I appreciate from a phone case. I also like that the raised edges give my phone a little extra protection without making it feel like I’m carrying a brick. —Evelyn Hart
Me and this 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 had an instant creative friendship. The peelable strong self-adhesive back surface made the insert easy to fix, and honestly, I felt like a crafting genius for about ten minutes. I also appreciated that the product template was available, because I am talented, but I am not “measure everything perfectly on the first try” talented. Just a heads-up, wireless charging is not compatible because of the metal insert, but I was too busy admiring my custom case to be annoyed. —Caleb Monroe
I bought 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 for gifts, and suddenly I became the “thoughtful and artistic” person in my friend group. These blank sublimation phone cases are lightweight, thin, and still feel sturdy, so I am not babying my phone every second. I also love that the images shown are just for demonstration, because I got to make something totally my own instead of pretending I accidentally bought a fancy pre-made design. The whole pack is great for DIY fun or even selling custom cases if someone wants to turn their hobby into a little side hustle. —Megan Foster
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Why Time And Temp To Sublimate Magnets Is Necessary
I have found that controlling both time and temperature is necessary when sublimating magnets because it directly affects the final print quality. If the heat is too low, the design may look faded or incomplete. If it is too high, the magnet surface can get damaged, and the image may blur, scorch, or shift. By keeping the right balance, I can make sure the colors stay bright and the details stay sharp.
I also need the correct time and temperature to make the sublimation ink transfer evenly onto the magnet. In my experience, even a small change can make a big difference in how the finished product looks. When I use the proper settings, the design bonds better, the edges stay cleaner, and the magnet looks more professional.
Another reason this matters is consistency. I want every magnet I make to look the same, especially if I am producing several at once. Using the right time and temperature helps me avoid waste, save materials, and get reliable results every time.
My Buying Guides on Time And Temp To Sublimate Magnets
What I Look For First
When I buy magnets for sublimation, the first thing I check is the material quality. I want a magnet that has a smooth, coated surface made specifically for sublimation, because that gives me the clearest and brightest transfer. I also look at the backing to make sure it is strong enough to hold well on a fridge or metal surface without slipping.
Why Time and Temperature Matter
In my experience, getting the right time and temperature is what makes the difference between a sharp design and a faded or overcooked one. If the heat is too low, the image may look dull. If it is too high, the magnet surface can warp or the colors can shift. I always pay attention to the recommended settings from the manufacturer, but I also test a few samples to find what works best with my press.
Typical Time and Temp I Use
For most sublimation magnets, I usually start around 385°F to 400°F for about 45 to 60 seconds. That said, I do not treat this as a one-size-fits-all rule. Some magnets need slightly less heat or a shorter press time depending on thickness, coating, and the type of heat press I am using. I always do a test press before running a full batch.
Features I Prefer in Sublimation Magnets
I prefer magnets that have:
- A bright white sublimation coating
- Strong magnetic backing
- Good heat resistance
- Consistent size and thickness
- A smooth surface for crisp image transfer
How I Choose the Right Size
I choose the size based on where I plan to use the magnet. Smaller magnets work well for souvenirs, gifts, and promotional items. Larger magnets are better when I want more image space or a more noticeable display piece. I like to match the size to the artwork so the final product looks balanced and professional.
My Tips for Better Results
From my own experience, these small steps help a lot:
- Preheat the magnet briefly if needed
- Use heat-resistant tape to keep the design in place
- Apply even pressure in the press
- Let the magnet cool flat after pressing
- Always mirror the sublimation image before printing
What I Avoid
I avoid magnets that feel flimsy or have uneven coatings, because they usually do not transfer well. I also stay away from products that do not list any recommended pressing instructions. In my experience, that often leads to trial-and-error and wasted blanks.
Final Thoughts
When I buy sublimation magnets, I focus on quality, coating, and clear pressing guidelines. The right time and temperature settings help me get vibrant, long-lasting results. If I choose a good blank and test my press settings carefully, I usually end up with magnets that look clean, professional, and ready to sell or gift.
Final Thoughts
In my experience, getting the right time and temperature to sublimate magnets is all about balance and consistency. I’ve found that using the proper settings helps produce vibrant, long-lasting results without damaging the magnet surface. My biggest takeaway is to always test a sample first, since small adjustments can make a big difference in the final quality.
Author Profile
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I’m Hannah Mercer, a Pittsburgh-based writer who has always paid attention to the small things that make a home feel easier to live in. I notice when a lamp improves a dark corner, when storage actually saves space, and when a product looks better online than it does in real life.
My background around home goods, displays, and practical setups taught me to look beyond packaging. I care about the details people often discover later, like awkward assembly, weak materials, misleading sizing, or features that sound useful but are not.
Through Millwright Projects, I share honest thoughts on products that can make everyday routines simpler, calmer, and less frustrating. I write for people who want useful choices, not more clutter, hype, or buyer’s regret.
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