While I was making some resin models, I wondered whether resin prints can melt or whether they are heat-resistant, so I decided to do some research into this.
Resin prints can’t melt since they are not thermoplastics. When they get heated to very high temperatures like 180°C, they will scorch and deteriorate. After resin prints have cured they cannot go back to their original liquid state. Resin prints start to soften or lose elasticity at temperatures between 40-70°C.
There are more details that you’ll want to know so keep reading this article to find out.
Can Resin Prints Melt? What Temperature Does 3D Resin Melt At?
One important factor that you should know about resin prints is that they are not thermoplastics which means that when they cure and get hardened, they cannot melt or turn back into a liquid.
Some users say resin prints often get softened as the temperature increases and for most resins, it starts at around 40°C. However, this may be subject to the type of resin used and the condition required to cure them.
Many users think their resin has melted when it has actually just leaked out and expanded due to its properties.
When uncured resin gets trapped in a resin print due to not draining properly, it still cures but very slowly over time. While the resin is curing, it produces heat and pressure which can start to crack or even blow up the resin print.
If you’ve seen resin leaking or dripping from a model, it means that the uncured resin finally built up the pressure to crack through the model and release it. In some situations, this reaction can be really bad so it’s important to properly hollow and drain your models.
Check out these articles I have done to learn how to go through the resin printing process and avoid this happening to you – How to Hollow Resin 3D Prints Properly – Save Your Resin &How to Dig Holes in Resin Prints Like a Pro.
A visual example of this happening can be seen in the video below by Advanced Greekery.
He shared a video on YouTube where some 14-month-old Rook prints were oozing out some really toxic uncured resin on his shelf. He posited four possible reasons why his prints started “melting”:
Heat from an LED light nearby on the shelf
Heat from the room
Some kind of reaction with the shelf paint and the resin
Uncured resin within the Rook causing cracks and resin to spill
He went through all these possibilities one by one to debunk them and find the real answer.
The first was the LED light which produces little to no heat and the light source didn’t really reach where the Rook prints were.
It was in the winter, so the room temperature couldn’t have had such an effect
The uncured resin didn’t cause a reaction with the paint because there was no mixing of the paint in the resin
The last reason which quite a number of users attest to was that the trapped uncured resin in the print built up pressure and ended up splitting the model open, resulting in leaking resin.
Are Resin Prints Heat-Resistant?
Resin 3D prints can be heat-resistant if you use a specialized heat-resistant resin like the Peopoly Moai Hi-Temp Nex Resin, having great thermal stability and heat deflection temperatures around 180°C. One user said Elegoo resin prints start to crack around 200°C and melt/crumble around 500°C, also giving off fumes.
Normal resins like Anycubic or Elegoo can resist heat fairly well but they do start to soften at lower temperatures like 40°C.
If you have a project where the object will be in high temperature environments, you want to get a heat-resistant resin. They do cost significantly more than your average bottles of resin so keep this in mind.
It may even be possible to mix together these high-temp resins with normal resins, similar to how you mix flexible or tough resin with normal resin to improve its durability and strength.
In some cases where you just need a little bit of extra heat-resistance, this could work really well.
One user who tried a few types of resin like water washable and ABS-Like resin found that they easily warped and cracked when subjected to heat. He also lived in quite a cold area, so the change in temperature from cold to hot could contribute to less heat-resistance.
You can also choose to cast models into silicone if you need very high temperature resistance.
Here’s a really creative way that a YouTuber by the name of Integza created a high-temperature ceramic part using porcelain resin. It can allow you to create a model that can withstand a temperature up to 1,000°C.
However, to achieve this, you may have to gradually and slowly raise the temperature by 5° every minute and a half until it reaches 1,300°C so as to burn out the resin and get a hundred percent ceramic part. You may cure the print with a kiln or a cheap furnace.
Unfortunately, the furnace actually blew up during this experiment since it was not meant to maintain such a high temperature for a long period of time.
However, the ceramic models that were 3D printed were able to withstand the heat from a very hot flame that was used to test its heat resistance.
For the Makerjuice High Performance General Purpose Resin, it has a data sheet which states a glass transition temperature of 104°C, which is when the material gets to a soft, rubbery state.
When you have the right high temperature resin, you can put them in boiling water for hours and they shouldn’t become brittle, cracked or soft.
Check out the video below by ModBot who puts Siraya Tech Sculpt Ultra to the test which can withstand temperatures of up to 160°C.
Check out 3D Printing Nerd’s video below on applying actual fire to a print made from the Siraya Tech Sculpt Ultra. I forwarded the time on the video straight to the action.
Heat Resistance of Elegoo Resin
Elegoo ABS-like resin has a thermal deformation temperature of about 70℃. This means that the prints get softened or malleable at this temperature and may burn out at higher temperatures. A user with a heat gun and laser thermometer found that Elegoo Resin starts to crack around 200°C.
At temperatures of 500°C, the resin started showing several cracks and deteriorated, also giving off visible gas fumes.
Anycubic Resin Temperature Resistance
Anycubic Resin is known to have a glass transition temperature of around 85°C. The thermal deformation temperature of Anycubic’s Plant-Based Resin is known to be lower than their standard resins.
In terms of printing the liquid resin at low temperatures, auser who purchased the Anycubic resin on Amazon left feedback that says that they printed in their garage during winter when temperature and humidity fluctuate with the weather.
The winter temperature in their garage hovers around 10-15°C (50°F-60°F) and the resin performed well despite the lower temperature.
Another user expressed their excitement about being able to 3D print with the Anycubic resin under a normal room temperature of 20°C which was below the recommended temperature for storing resin.
Best High-Temperature SLA Resin
There are actually quite a few types of high-temperature resins out there so I looked into it to find some of the best. Here is a quick list of four great high temperature resins that you can start using for your projects.
One of the best high-temperature resins you may want to consider is the Phrozen resin is specially made for LCD 3D printers with about 405 nm wavelength, which is most out there. This type of resin is able to withstand heat of about 120°C.
It has low viscosity and low odor, making it very easy to use and clean. Having resins that don’t have a strong odor is definitely appreciated. This resin also has low shrinkage so your models stay in shape as they were designed.
Not only do you have great temperature resistance, but your models should have good durability and toughness. They advertise it as being great for dental models and industrial parts.
You can get yourself a bottle of this Phrozen Functional Resin from Amazon for around $50 for 1KG.
As previously mentioned above, the Siraya Tech Sculpt Ultra Resin is a great choice for a high-temperature resin. Ithas a high-temperature resistance of about 160°C (320°F) and is priced competitively at around $40 for 1KG.
Even when the models reach high temperatures, since it has a great heat deflection temperature, they won’t soften very much. It’s perfect for the high temperature production and prototypes that need to maintain shape.
Another highlight of this resin is how it has amazing resolution and a smooth surface finish, especially with the Matte White color. It’s compatible with most resin 3D printers out there like Elegoo, Anycubic, Phrozen and more.
They do mention how you can mix this resin with lower temperature resins to improve the heat-resistance, like I talked about earlier in the article.
At the time of writing, they have a rating of 4.8/5.0, having 87% of ratings at 5 stars.
Another one on the list is the Formlabs High Temp Resin, a more premium brand of resin. It was designed and manufactured to perform well under pressure, having a heat deflection temperature of 238°C. It’s the highest among the Formlabs resins out there, and very high compared to most others.
The compatibility does mention it usually goes with other Formlabs printers though, so I’m not sure how well it would work with other printers. Some users mentioned that Formlabs uses quite high power UV laser, so if you were to use it in your resin printer, increase the exposure times.
He did give an update to say he got some moderately successful prints from his Anycubic Photon, but it doesn’t have the greatest resolution, maybe because it needs a lot of UV power to cure it.
Last but not least is the Peopoly Moai Hi-Temp Nex Resin, a great resin that has a heat resistance of up to 180°C (356°F).
They have a number of great properties such as:
Handles up to 180°C (356°F)
Good hardness
Easy on the PDMS layer
High resolution
Low shrinkage
Provides a great surface finish
Easy to sand and paint
The unique gray color is perfect for delivering high resolution and smooth finishes. Users who love 3D printing sculpts and high detail models will definitely enjoy this resin.
You can get the Peopoly Hi-Temp Nex Resin directly from the Phrozen Store for around $70, or sometimes on sale for $40 so definitely check that out.
Related Posts:
How to Make 3D Prints More Heat-Resistant (PLA) - Annealing
Top 5 Most Heat-Resistant 3D Printing Filament
Will PLA, PETG, or ABS 3D Prints Melt in a Car or the Sun?
How to Calibrate Your Hot End and Heat Bed with PID Tuning
For people struggling with various 3D printing issues, you might want have wanted more guidance towards getting ideal 3D printing results. I created a full course that's available to purchase called Filament Printing 101: Beginner's Guide to Filament Printing that takes you through some of the best 3D printing practices early on, so you can avoid those beginner mistakes.
While I was making some resin models, I wondered whether resin prints can melt or whether they are heat-resistant, so I decided to do some research into this. Resin prints can't melt since they are not thermoplastics. When they get heated to very high temperatures like 180°C, they will scorch and deteriorate.
The warmer resin will cure faster, while the colder ambient temperature will slow down the curing speed. That means that you might need to use longer exposures in winter. In general, recommended room temperature is around 25°C.
Printed on a SLA 3D printer, High Temp Resin is designed to be used in high-temperature scenarios such as; ducting, molding, and for the automotive and aerospace industries. It has a heat deflection temperature of 289 degrees Celsius.
When you have a high-heat application, you need to make sure that your parts can withstand the temperatures. With 3D printing, that can be tricky. Standard PLA material will start melting at 50°C, which makes it useless in high-temperature applications. However, there are other 3D printing materials to consider.
Why does resin melt? The thermosetting polymer chain starts disintegrating when you apply heat to your resin. The resin softens as the breakdown occurs. You might see it as melting, but what's really happening is chemical disintegration.
The most basic resins can stand up against temperatures from 150° F to 300° F for short periods of time. Over time, the epoxy will begin to distort when exposed to these temperatures. Heat-resistant epoxy is a lot more durable than its basic counterparts. It can typically withstand heat up to 600° F.
Maintain a cooler-than-normal temperature in your work area.
While the low 70s F is the ideal temperature for casting resin, you may want to work in temperatures in the 60s F if you think your resin mix will get too hot.
The maximum temperature that cured ArtResin can tolerate is 120F or 50C. At temperatures as high as that, the cured pieces may become a little flexible but once they cool off, they will harden up once again.
Sculpt is developed to be as the go-to resin for model makers with high hardness, great surface finish, excellent resolution and high temperature resistance at 160C. Due to higher polymer content for its outstanding mechanical properties, the ideal printing condition for Sculpt is over 25C.
Titanium. Titanium is a 3D printing material with excellent mechanical properties. Not only it's very durable, lightweight, highly resistant to oxidation and acid, but it's also resistant to heat. The melting point of titanium is extremely high (1660° C or 3260° F).
Resin prints can't melt since they are not thermoplastics. When they get heated to very high temperatures like 180°C, they will scorch and deteriorate. After resin prints have cured they cannot go back to their original liquid state. Resin prints start to soften or lose elasticity at temperatures between 40-70°C.
[1] However, too high a temperature can result in overly melted extruded layers which then sag and cause part deformation, in addition to other problems like material accidentally oozing from the nozzle. Using the lowest temperature you can get away with can therefore lead to the best visual results.
While resin 3D printers can produce better quality parts than filament printers, they fall short when it comes to part strength and durability. Resin parts are often weak and brittle, so they have relatively few end-use applications.
The place where you install the printer is recommended that it be between 15ºC and 30ºC to avoid problems that affect print quality. In very hot environments, material flow or shrinkage can be affected, leaving threads or bubbles on the piece surface.
Because UV rays from the sun also gradually cure and degrade photopolymer resins, keeping your 3D printed object in the sun can also cause over-curing over time. This can make a 3D printed part more brittle and prone to breaking.
Cured resin art can withstand a certain amount of heat, say, a warm coffee cup on a coaster, for example, but very high temperatures can cause fully cured resin art to temporarily soften. The resin will quickly harden up again once it cools down, but prolonged exposure may cause the resin to shift or distort.
The resin will lose its transparency first before it slowly melts. Epoxy resin is a type of plastic and it behaves very much like plastic when it gets too hot. The melting point of resin can be anywhere between 20°C (68°F) and 316°C (600°F). Resin usually only melts when it gets into direct contact with a heat source.
Its melting point is over 550°F, and if you were to heat it to that point, it will melt. Epoxy resin can burn if it comes in contact with an open flame.Polyester resin can also both melt and burn.
Permatex®s 500 High Heat Epoxy is the first and only high temperature liquid syringe epoxy! Ideal for surface repairs with high temperatures such as under-hood automotive & home repair. This high temperature epoxy withstands 2X higher temperatures compared to standard epoxies that traditionally breakdown at 250°F.
It is not heat resistant, but it will take some heat. People have made coasters with it and it does take some heat from coffee cups. However above 65 degrees C it would/could start to soften. Most epoxy resin cannot take very hot cups/mugs.
With that said, epoxy resin is temperature and volume sensitive. So the higher the ambient air temperature and volume of epoxy used; directly corresponds to the amount of heat generated.
Let the resin sit in a warm water bath for approximately 15 minutes. Heat accelerates curing, so warming the resin will reduce the pot life. Don't let warmed resin sit in the cup after you've measured and mixed it or it may cure prematurely.
A warm water bath can help achieve this, but it's important not to use boiling water as it will make the resin and hardener far too hot, causing them to cure instantly when mixed. The water should only be warm, like a baby's bath.
As mentioned above, heat and flame can damage even cured resin. Dillon has her own methods of addressing any heat concerns: “You don't want resin to get too hot. Therefore, I used a glass insert inside the resin when making my homemade candles.
Yes, resin prints have stronger mechanical properties than PLA prints, but that doesn't mean they are rendered useless. PLA is used in a lot of 3D printing applications ranging from replacement parts, tooling accessories and architectural models.
Well, it's true that most standard resins are relatively brittle compared to other 3D printing materials and aren't recommended for stressed parts or outdoor use, although there are tough and durable resins on the market specifically formulated for stronger applications, and they can be really strong.
Polycarbonate (PC) delivers high tensile strength along with high impact and heat resistance. It's widely seen as one of the strongest 3D printing filaments.
the 2 main materials for 3D printing have melting points around 210°C (65°C Glass transition) for PLA and 230°C (105°C Glass transition) for ABS so these would be deforming at and about the Glass transition temp.
PETG and ASA are 3D printing materials for outdoor use and durable (hold over time). Both filaments are insensitive to changing temperatures and UV rays. They are perfect to use in extreme conditions without deforming shape or appearance.
ABS (acrylonitrile butadiene styrene) is a commonly used thermoplastic filament that is popular among professional printers due to its stiffness and heat resistance. This 3D printing filament is frequently used for prints that will undergo high-stress applications, like heat or impact.
This problem is caused by overheating. The principle of FDM 3D printing is melting the material, squeeze it out and cool down the paste-like material to form the designated shape. Thus, if the cooling is not fine enough or the temperature is too high, the material will not be able to retain the shape.
What is the Melting Temperature of Nylon Filament? The melting temperature of the nylon filament is 188.4 °C. Carbon or glass-filled nylon 3D printing filaments have melting temperatures equivalent to their base polymer melting temperatures.
The answer is no. Substances may migrate from SLA parts which makes none of the resins and printed parts food safe by default. While some resins for dental and medical applications are certified biocompatible, that doesn't mean that they're food safe.
Irritating to the skin and respiratory system: You should never expose your bare skin to the liquid chemicals of 3D printing resin! They can create contact dermatitis, which is a surface rash that could develop into an allergy if you expose yourself to resin for long periods of time. This goes for your lungs as well!
Although thermosetting photopolymer resins are sustainable because of no environmental pollution, volatile organic solvents are used in the resin formulations, most of the raw materials are still from non-biobased sources.
If you're printing too hot (with any filament, not just PLA) you're going to see stringing and blobs/oozing because the material is getting runny and exiting the nozzle in an uncontrolled manner. Because it's uncontrolled, you will also likely see artifacts showing up in your prints.
A 3D printer doesn't need a break as long as it is maintained properly and has good quality parts. Many people have printed for 200+ hours without any issues, so if you have a reliable 3D printer, your 3D printer won't need a break. Make sure your 3D printer is lubricated well and has fresh belts.
Lower the bed temperature: Incrementally lower the temperature of your bed by 5 °C until it successfully prints without any bulging. If you lower it by more than 20 °C outside the recommended temperature and the problem isn't getting better, the elephant's foot is likely to be caused by something else.
In short, when you place PLA under normal room temperature, it can last for a very long time – say 12 to 18 years. Depending on where and how you store it, 3D printed objects made from PLA can last from a month, to 2 years and up to many years. It can break down at different rates depending on its environment.
Fully cured epoxy can handle heat temperatures below 135°F.
At a temperature of 135°F or or higher, the epoxy may begin to exhibit heat damage. For practical purposes, this means that you should never place very hot objects like cooking pans or skillets directly onto the epoxy surface.
The maximum temperature that cured ArtResin can tolerate is 120F or 50C. At temperatures as high as that, the cured pieces may become a little flexible but once they cool off, they will harden up once again.
In hot water, resin indentation cracks result and subsequent resin shrinkage and gross plastic deformation lead to their displacement along the fibres, followed by the successive nucleation and displacement of further indentation cracks.
Hot resin can be alarming; yet, it's perfectly normal! Combining the resin and hardener creates an exothermic reaction. This means that when the two liquids are mixed together, they begin producing heat that allows the mixture to solidify and cure.
Resin prints can't melt since they are not thermoplastics. When they get heated to very high temperatures like 180°C, they will scorch and deteriorate. After resin prints have cured they cannot go back to their original liquid state. Resin prints start to soften or lose elasticity at temperatures between 40-70°C.
The short answer is that no, your resin print won't melt in the sun–at least not one that's printed in Simon's Strengthening Solution! In fact, for a few hours at least, your resin print will be perfectly fine! They can even survive sitting in a hot car without any issues.
When done right, epoxy countertops provide a long-lasting and durable surface. Their non-porous nature means they're resistant to moisture. The material is also resistant enough to heat, although you still need to use common sense and not place hot pots and pans on it.
There are several different kinds of resin, and yes, many of them can catch fire. Therefore, it is always essential to learn about the specific resin you are using and its properties. Epoxy resin, after it has been cured, is not flammable and is fire-resistant. However, other kinds of resins are flammable.
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