Resin 3D Printing Questions, Answered

Can different types of resin be mixed together for 3D printing?

Yes, different types of resin can be mixed together for 3D printing, but it is important to consider the compatibility of the resins and their properties. Mixing resins with different curing times, viscosities, or chemical compositions can affect the final print quality and may lead to issues such as poor adhesion, layer separation, or curing problems. It is recommended to carefully research and test the compatibility of the resins before mixing them for 3D printing.

Does resin 3d printing smell?

Yes, resin 3D printing can produce a strong and unpleasant odor. The resin used in the printing process emits fumes that can be irritating to the nose and throat. It is recommended to use resin 3D printers in a well-ventilated area or with a fume extractor to minimize the smell and potential health risks associated with inhaling the fumes.

How can the viscosity of resin affect the printing process and final product?

The viscosity of resin can affect the printing process and final product in several ways:

  1. Printing process: If the resin is too viscous, it may not flow smoothly through the printer nozzle, leading to clogs and uneven printing. On the other hand, if the resin is too thin, it may not hold its shape during printing, resulting in a loss of detail and accuracy.

  2. Final product quality: The viscosity of resin can also affect the final product’s surface finish and mechanical properties. Higher viscosity resins may result in a smoother surface finish, while lower viscosity resins may lead to a rougher finish. Additionally, the strength and durability of the printed object can be impacted by the viscosity of the resin used.

In summary, the viscosity of resin plays a crucial role in the 3D printing process and can significantly impact the quality and performance of the final product. It is important to carefully consider and adjust the viscosity of the resin to achieve the desired printing results.

How do I properly dispose of resin after 3D printing?

  1. Allow the resin to fully cure: After 3D printing, allow the resin to fully cure and harden. This may take a few hours to a few days, depending on the type of resin used.

  2. Dispose of solidified resin: Once the resin has fully cured, it can be disposed of as solid waste. Check with your local waste management facility for specific guidelines on how to dispose of solidified resin.

  3. Do not pour uncured resin down the drain: It is important to never pour uncured resin down the drain as it can be harmful to the environment and can clog pipes.

  4. Use a resin disposal container: Some 3D printing enthusiasts use a dedicated resin disposal container to collect and store used resin. Once the container is full, it can be sealed and disposed of according to local regulations.

  5. Follow local regulations: Different areas may have specific regulations for the disposal of resin and other 3D printing materials. Be sure to check with your local waste management facility for guidance on proper disposal methods.

  6. Consider recycling options: Some resin materials may be recyclable, so it is worth exploring recycling options in your area for proper disposal of resin after 3D printing.

How does resin compare to other materials?

Resin has several advantages and disadvantages compared to other materials:


  1. Versatility: Resin can be molded and shaped into a wide variety of forms, making it a versatile material for a range of applications.
  2. Durability: Resin is a durable material that can withstand wear and tear, making it suitable for long-lasting products.
  3. Lightweight: Resin is a lightweight material, making it easy to transport and handle.
  4. Weather resistance: Resin is resistant to weathering and can withstand exposure to the elements, making it suitable for outdoor use.


  1. Brittleness: Resin can be brittle and prone to cracking under high impact or stress.
  2. Limited heat resistance: Resin may soften or deform at high temperatures, limiting its use in high-temperature applications.
  3. Environmental impact: Some types of resin may have a negative environmental impact, especially if not properly disposed of or recycled.

Overall, resin offers a unique combination of versatility, durability, and weather resistance, but it may not be suitable for all applications due to its limitations in heat resistance and potential environmental impact.

How does the curing process of resin 3D prints affect their strength and durability, and what factors can influence it?

The curing process of resin 3D prints can significantly affect their strength and durability. When resin prints are cured, the resin undergoes a chemical reaction that transforms it from a liquid to a solid state. This process can improve the mechanical properties of the print, making it stronger and more durable.

Factors that can influence the curing process and, consequently, the strength and durability of resin 3D prints include:

  1. Curing time and temperature: The duration and temperature at which the resin is cured can impact its final strength and durability. Proper curing conditions are essential to ensure that the resin is fully cured and achieves its maximum mechanical properties.

  2. Post-curing: Some resin prints may require post-curing, which involves exposing the print to additional UV light or heat to further enhance its strength and durability.

  3. Resin type: Different types of resins have varying curing requirements and can result in prints with different mechanical properties. It is important to use the appropriate resin for the desired strength and durability of the print.

  4. Layer thickness and exposure settings: The layer thickness and exposure settings used during the printing process can also affect the curing process and the final strength of the print. Proper calibration of these settings is crucial to achieve optimal mechanical properties.

  5. Environmental factors: Environmental conditions, such as humidity and temperature, can also influence the curing process and the mechanical properties of resin prints. It is important to cure resin prints in a controlled environment to ensure consistent results.

Overall, the curing process of resin 3D prints plays a critical role in determining their strength and durability. Proper curing conditions, resin selection, and post-curing techniques are essential factors to consider in order to achieve prints with optimal mechanical properties.

How does the curing time of resin affect the final print quality?

The curing time of resin can significantly affect the final print quality. If the resin is not cured for a sufficient amount of time, the print may not fully solidify, leading to a soft or tacky surface and a lack of structural integrity. On the other hand, over-curing the resin can result in a brittle and fragile print.

Proper curing time is essential for achieving the desired level of hardness and strength in the final print. It also plays a crucial role in ensuring that the print has a smooth and even surface finish. Therefore, it is important to follow the manufacturer’s recommendations for curing time to achieve the best possible print quality.

What are some common post-processing techniques for resin 3D prints and how do they impact the final result?

  1. Sanding: Sanding resin 3D prints can help to smooth out any rough or uneven surfaces, resulting in a more polished and professional-looking final result.

  2. Filling and priming: Filling any imperfections with putty and priming the surface can help to create a smooth and even base for painting, resulting in a more uniform and professional finish.

  3. Painting: Painting resin 3D prints can add color and detail to the final result, enhancing the overall appearance and making the print more visually appealing.

  4. Polishing: Polishing resin 3D prints can help to achieve a glossy and smooth surface, giving the print a more high-end and professional look.

  5. UV curing: UV curing resin prints can help to strengthen and harden the material, resulting in a more durable and long-lasting final result.

Overall, these post-processing techniques can greatly impact the final result of resin 3D prints by improving their appearance, durability, and overall quality.

What are the advantages and disadvantages of using resin versus other 3D printing materials?

Advantages of using resin for 3D printing:

  1. High level of detail and precision: Resin 3D printing can produce highly detailed and intricate designs with smooth surfaces.
  2. Wide range of colors and finishes: Resin can be easily dyed and finished to achieve a variety of colors and textures.
  3. Fast printing speed: Resin 3D printers can produce objects quickly, making them suitable for rapid prototyping and small-scale production.
  4. Low material waste: Resin 3D printing produces minimal waste as the unused resin can be reused for future prints.

Disadvantages of using resin for 3D printing:

  1. Limited material options: Resin is generally limited to a few types of materials, such as standard resin, flexible resin, and tough resin, compared to other 3D printing materials like filaments and powders.
  2. Post-processing requirements: Resin prints often require post-processing steps such as cleaning, curing, and sanding to achieve the desired finish.
  3. Toxic fumes and chemicals: Resin printing involves the use of toxic chemicals and emits strong odors, requiring proper ventilation and safety precautions.
  4. Higher cost: Resin 3D printing can be more expensive compared to other materials due to the cost of the resin and the specialized equipment required.

What are the advantages of using resin over other 3D printing materials?

  1. Strength and durability: Resin 3D printed objects are known for their high strength and durability, making them suitable for functional prototypes and end-use parts.

  2. High level of detail: Resin 3D printing can achieve very high levels of detail and precision, making it ideal for creating intricate and complex designs.

  3. Smooth surface finish: Resin prints have a smooth surface finish, which reduces the need for post-processing and finishing work.

  4. Wide range of material properties: Resin 3D printing offers a wide range of material properties, including flexibility, toughness, and heat resistance, allowing for the creation of parts with specific performance requirements.

  5. Fast printing speed: Resin 3D printing can be faster than other 3D printing methods, allowing for quicker production of parts.

  6. Compatibility with SLA and DLP printers: Resin is compatible with SLA (stereolithography) and DLP (digital light processing) 3D printers, which are known for their high resolution and accuracy.

  7. Variety of colors and finishes: Resin is available in a wide range of colors and finishes, allowing for greater customization and aesthetic options.

What are the best practices for post-processing resin prints?

  1. Clean the print: After the print is complete, remove it from the build plate and clean off any excess resin using isopropyl alcohol and a soft brush. Be sure to wear gloves and work in a well-ventilated area.

  2. Cure the print: Once the excess resin is removed, the print needs to be cured to fully harden the resin. This can be done using a UV light box or by placing the print in direct sunlight for a few hours.

  3. Sanding: Depending on the quality of the print, sanding may be necessary to smooth out any rough or uneven surfaces. Start with a coarse sandpaper and gradually work your way to a finer grit for a smooth finish.

  4. Filling and priming: If there are any imperfections or holes in the print, they can be filled with a resin putty or filler. Once filled, the print can be primed with a spray primer to create a smooth surface for painting.

  5. Painting: After priming, the print can be painted using acrylic or enamel paints. Be sure to use thin, even coats and allow each layer to dry before applying the next.

  6. Finishing: Once the paint is dry, a clear coat can be applied to protect the finish and give the print a glossy or matte appearance.

  7. Detailing: If desired, additional details such as decals, weathering, or other finishing touches can be added to enhance the appearance of the print.

  8. Quality check: After post-processing, carefully inspect the print for any remaining imperfections or areas that may need further attention. Make any necessary touch-ups or adjustments to ensure a high-quality finish.

What are the different types of resin available for 3D printing and how do they differ in terms of properties and applications?

There are several types of resin available for 3D printing, each with its own unique properties and applications. Some of the most common types of resin for 3D printing include:

  1. Standard Resin: Standard resin is a versatile and affordable option for 3D printing. It is known for its high level of detail and smooth surface finish, making it ideal for creating intricate and precise models. Standard resin is commonly used for prototyping, jewelry making, and small-scale production.

  2. Tough Resin: Tough resin is a durable and impact-resistant material that is designed to withstand heavy use and rough handling. It is often used for functional prototypes, engineering parts, and other applications that require high strength and durability.

  3. Flexible Resin: Flexible resin is a soft and rubber-like material that can be bent, stretched, and compressed without breaking. It is commonly used for creating flexible parts, such as gaskets, seals, and wearable accessories.

  4. Castable Resin: Castable resin is designed for creating molds and patterns that can be used for investment casting. It has a high level of detail and can be burned out without leaving any residue, making it ideal for creating jewelry, dental appliances, and other precision parts.

  5. Dental Resin: Dental resin is a biocompatible material that is specifically designed for creating dental appliances, such as crowns, bridges, and dentures. It is known for its high level of accuracy and precision, making it ideal for dental applications.

  6. High-Temperature Resin: High-temperature resin is a heat-resistant material that can withstand elevated temperatures without deforming or melting. It is commonly used for creating parts that will be exposed to high temperatures, such as automotive components, electronic housings, and industrial tools.

Each type of resin has its own unique set of properties and applications, so it is important to choose the right material for your specific 3D printing needs.

What are the safety considerations of 3D printing with resin?

  1. Ventilation: Resin 3D printing should be done in a well-ventilated area to prevent inhaling fumes and vapors emitted during the printing process.

  2. Skin contact: Resin can be irritating to the skin, so it is important to wear gloves when handling resin and printed objects.

  3. Eye protection: Resin can cause irritation or damage to the eyes, so wearing safety goggles is recommended when working with resin.

  4. Chemical exposure: Resin contains chemicals that can be harmful if ingested or absorbed through the skin, so it is important to handle it with care and follow proper safety protocols.

  5. Fire hazard: Resin is flammable, so it is important to keep it away from open flames and heat sources.

  6. Post-processing: When post-processing printed objects, such as sanding or painting, it is important to wear appropriate protective equipment to prevent exposure to resin particles and fumes.

  7. Waste disposal: Properly dispose of resin waste and used containers according to local regulations to prevent environmental contamination.

  8. Equipment maintenance: Regularly maintain and clean 3D printing equipment to prevent resin spills and leaks, and to ensure safe operation.

  9. Training and education: Ensure that anyone working with resin 3D printing is properly trained on safety procedures and protocols.

What are the safety considerations when working with resin for 3D printing, and how can they be mitigated?

Safety considerations when working with resin for 3D printing include:

  1. Skin and eye contact: Resin can be irritating to the skin and eyes, and prolonged exposure can cause allergic reactions. It is important to wear gloves, long sleeves, and safety goggles when handling resin to prevent direct contact with the skin and eyes.

  2. Inhalation: Resin emits fumes that can be harmful if inhaled, causing respiratory irritation and potential long-term health effects. It is important to work in a well-ventilated area or use a fume extraction system to minimize exposure to resin fumes.

  3. Flammability: Resin is flammable and should be stored and handled away from sources of ignition. It is important to have fire safety measures in place, such as fire extinguishers, and to follow proper storage and handling procedures to minimize the risk of fire.

  4. Chemical hazards: Resin contains chemicals that can be hazardous if not handled properly. It is important to read and follow the manufacturer’s safety data sheet (SDS) for the specific resin being used, and to follow proper handling and disposal procedures to minimize the risk of chemical exposure.

To mitigate these safety considerations when working with resin for 3D printing, the following measures can be taken:

  1. Use personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat or apron to protect the skin and eyes from direct contact with resin.

  2. Work in a well-ventilated area or use a fume extraction system to minimize exposure to resin fumes. If working in a confined space, use a respirator with appropriate filters to protect against inhalation of resin fumes.

  3. Store and handle resin away from sources of ignition, and have fire safety measures in place such as fire extinguishers.

  4. Read and follow the manufacturer’s safety data sheet (SDS) for the specific resin being used, and follow proper handling and disposal procedures to minimize the risk of chemical exposure.

By following these safety measures, the risks associated with working with resin for 3D printing can be minimized, and a safe working environment can be maintained.

What are the safety precautions that should be taken when working with resin for 3D printing?

  1. Wear appropriate personal protective equipment, including gloves, safety goggles, and a respirator if working with resin that emits fumes.

  2. Work in a well-ventilated area to minimize exposure to fumes and odors.

  3. Avoid skin contact with uncured resin by wearing long sleeves and pants, and washing hands thoroughly after handling resin.

  4. Keep resin away from food and drinks to prevent accidental ingestion.

  5. Store resin in a cool, dry place away from direct sunlight and heat sources.

  6. Follow the manufacturer’s instructions for handling and disposing of resin, including proper storage and disposal methods.

  7. Clean up spills and drips immediately to prevent accidental contact with uncured resin.

  8. Use appropriate tools and equipment for handling and mixing resin, and avoid using bare hands.

  9. Keep resin away from open flames and sources of ignition, as some resins are flammable.

  10. Educate yourself on the specific hazards and safety precautions for the type of resin you are working with, and seek training if necessary.

What can I print with resin?

You can print a wide variety of objects with resin, including jewelry, figurines, prototypes, dental models, architectural models, and more. Resin printing allows for intricate and detailed designs, making it suitable for a range of applications.

What is the best way to clean resin off of 3D printed parts?

The best way to clean resin off of 3D printed parts is to use isopropyl alcohol (IPA) and a soft brush or cloth. First, remove any excess resin by gently scraping it off with a tool or your fingers. Then, soak the part in a container of IPA for a few minutes to dissolve the remaining resin. Use a soft brush or cloth to gently scrub the part and remove any stubborn residue. Finally, rinse the part with clean water and allow it to dry completely before use. It’s important to wear gloves and work in a well-ventilated area when handling resin and IPA.

What is that smell?

The smell you’re noticing could be due to the release of Volatile Organic Compounds (VOCs) during the 3D printing process. Both FDM and resin 3D printers can generate VOCs that have distinctive odors.

For FDM printers, the smell can vary depending on the type of filament being used. For example, PLA often has a sweet smell, while ABS can produce a more unpleasant odor.

Resin printers, on the other hand, can produce a strong and often unpleasant smell due to the chemicals used in the resin. This smell is particularly noticeable during the printing and post-processing stages.

Some of the VOCs released during 3D printing include Alpha-pinene, Lactide, Limonene, and Propylene Glycol, which are common in foods, fragrances, and everyday goods. However, hazardous VOCs like Dioxane, Formaldehyde, and Styrene, which have been linked to an increased risk of cancer, can also be emitted.

It’s important to note that just because you can’t smell anything doesn’t mean there are no VOCs present. Some VOCs are odorless but can still be harmful. Therefore, it’s recommended to use proper ventilation or filtration systems when 3D printing, especially when printing indoors.

Amazing reference:

Does resin material degrade faster under UV light than thermoplastics?

Yes, resin materials generally degrade faster under UV light compared to thermoplastics. UV light can cause photodegradation in resin materials, leading to changes in their physical and mechanical properties over time. This degradation can result in color fading, brittleness, reduced strength, and other undesirable effects.

Thermoplastics, on the other hand, are generally more resistant to UV degradation. They have better UV stability and can withstand prolonged exposure to UV light without significant degradation. However, it’s important to note that not all thermoplastics have the same level of UV resistance, and some may still experience degradation under extreme UV exposure.

To mitigate UV degradation in resin materials, various strategies can be employed, such as using UV stabilizers or additives, applying protective coatings, or storing the materials in UV-blocking containers. It’s always recommended to consult the specific material manufacturer’s guidelines and recommendations for proper handling and protection against UV exposure.

My Print Is Overcured: What Should I Try Next?

Overcuring in resin 3D printing is when the resin gets too much exposure to the light source, causing it to harden excessively. This can lead to issues like a rough surface or extreme lines visible in the print.

Here are some steps you can take to address print overcuring:

  • Reduce the exposure time of the regular layers: Since overcuring is often a result of too much light exposure, reducing the exposure time can help ensure that the resin doesn’t harden more than necessary.

  • Increase the wait time before lift: Increasing the wait time before the build plate lifts can help reduce stresses on the cured resin and allow more time for the resin to settle and properly form the desired shape.

  • Decrease the lift speed and retract speed: Slowing down the speed at which the build plate lifts and retracts can help reduce the chance of overcuring, as it reduces the amount of stress on the part during the printing process.

Remember that it’s important to make changes gradually and monitor the results, as too much adjustment at once can lead to other issues.

If the problem persists, it might be a good idea to check if there is any issue with the 3D printer’s hardware. Make sure that the build plate is leveled and check if there is any wobble in the Z-axis.

Here’s a great resource:

How can I do a working curve?

To create a photopolymer “working curve,” which establishes the relationship between the depth of a photocured resin and the corresponding light dose, you can follow these general steps:

  1. Gather the necessary materials:

    • Photopolymer resin
    • Light source (e.g., projector, laser)
    • Power meter (to measure light intensity)
    • Thickness measurement tool (e.g., micrometer, caliper)
  2. Prepare the resin:

    • Ensure the resin is properly mixed and free from any contaminants.
  3. Set up the experiment:

    • Place a layer of the resin on a substrate or in a container.
    • Position the light source at a fixed distance from the resin surface.
    • Adjust the light intensity and exposure duration to achieve different light doses.
  4. Measure the thickness:

    • After each exposure, measure the thickness of the cured resin using the thickness measurement tool.
    • Record the corresponding light dose for each thickness measurement.
  5. Plot the working curve:

    • Create a graph with the light dose (x-axis) plotted on a logarithmic scale and the cured resin thickness (y-axis) plotted on a linear scale.
    • Plot the data points obtained from the measurements on the graph.
  6. Analyze the working curve:

    • Examine the shape of the curve. Ideally, it should be linear when plotted with a logarithmic dose axis and a linear depth axis.
    • Determine the slope of the curve, which represents the depth of light penetration (Dp).
    • Identify the critical dose for gelation (Ecrit), which is the x-intercept of the working curve.
  7. Use the working curve for exposure settings:

    • With the working curve, you can interpolate the dose required to cure a layer of a specific thickness.
    • Use the working curve to determine the optimal exposure settings for your desired resin thickness.

Remember that the specific process and parameters may vary depending on the type of photopolymer resin and equipment you are using. It is also important to note that standardization efforts are underway to establish best practices for working curve measurements.

Learn more:

  1. How to Take a Working Curve Measurement and Create Exposure Settings From It : 9 Steps (with Pictures) - Instructables
  2. Making the Working Curve Work for You - UV+EB Technology
  3. Resin 3D-printing: Ec, Dp, cure depth & more explained

Can you explain how DLP additive manufacturing works?

Digital Light Processing (DLP) is a 3D printing technology that uses a projected light source to cure a liquid photopolymer resin and create solid objects layer by layer. Here is a step-by-step explanation of how DLP additive manufacturing works:

  1. Preparation: The 3D model of the object to be printed is created using computer-aided design (CAD) software. The model is then sliced into thin layers using slicing software, which determines the path and exposure time for each layer.

  2. Resin Vat: A vat or tank is filled with a liquid photopolymer resin. This resin is sensitive to light and can be cured or hardened when exposed to specific wavelengths.

  3. Projector: A DLP projector is used to display the image of the first layer of the 3D model onto the surface of the resin. The projector emits light in the form of a pattern or mask that corresponds to the shape of the layer.

  4. Exposure: When the projected light hits the liquid resin, it causes the exposed areas to solidify or cure. The unexposed areas remain in a liquid state.

  5. Layer by Layer: After the first layer is exposed and cured, the build plate, which holds the object being printed, moves down by a precise distance. The vat is then filled with a fresh layer of liquid resin, and the process is repeated for the next layer.

  6. Build Completion: The layer-by-layer exposure and curing process continues until the entire 3D model is printed. Each layer adheres to the previous layer, gradually building up the object.

  7. Post-Processing: Once the printing is complete, the printed object is typically removed from the build plate and rinsed in a solvent to remove any excess resin. It may also undergo additional post-curing or finishing processes, such as UV curing or sanding, to enhance its final properties and appearance.

DLP additive manufacturing offers several advantages, including faster printing speeds compared to other technologies like SLA, the ability to produce intricate designs with high accuracy, and the potential for using a variety of materials beyond photopolymers.

Explain cationic curing

Cationic curing is a type of curing process used in the production of coatings, inks, and adhesives. This process involves the use of a catalyst, typically a strong acid, to initiate a polymerization reaction that hardens or “cures” a material.

The basics of cationic curing can be explained through the following steps:

  1. Initiation: The process begins with the absorption of light by a photoinitiator molecule. This light energy causes the photoinitiator to ionize and release a proton.
  2. Propagation: The proton then reacts with a monomer molecule, causing it to become a cation. This cation can then react with other monomers to form a polymer chain.
  3. Termination: The reaction continues until all the monomers have been consumed or the reaction is otherwise terminated.

What stuff do I need to safely print with resin?

To safely print with resin, you will need the following items:

  • Resin Printer: A resin 3D printer is necessary for printing with resin. There are various models available in the market, so choose one that suits your needs and budget.
  • Resin: You will need resin specifically designed for resin 3D printing. There are different types and colors of resin available, so choose the one that is suitable for your project.
  • Resin Vat: A resin vat is used to hold the resin during the printing process. It is important to have a clean and properly functioning resin vat for successful prints.
  • Build Plate: The build plate is where the print is attached during the printing process. It is important to ensure that the build plate is clean and level before starting a print.
  • UV Light Source: Resin 3D printers use UV light to cure the resin and solidify the prints. The printer should have a built-in UV light source or be compatible with an external UV light source.
  • Safety Equipment: It is crucial to have the following safety equipment to protect yourself while working with resin:
    • Nitrile gloves: Wear disposable nitrile gloves to protect your hands from direct contact with the resin.
    • Safety glasses: Wear safety glasses to protect your eyes from any splashes or spills.
    • Respirator: Use a respirator with appropriate filters to protect yourself from inhaling any fumes or particles.
  • Ventilation: It is important to have proper ventilation in the printing area to minimize exposure to fumes. If possible, set up the printer in a well-ventilated area or use a ventilation system to remove fumes.
  • Cleaning Supplies: You will need cleaning supplies to clean the resin vat, build plate, and any spills or drips. Isopropyl alcohol (IPA) is commonly used for cleaning resin prints and equipment.
  • Curing Station: After printing, the resin prints need to be cured to ensure their full strength and stability. You can use a UV curing station or a UV light box for this purpose.
  • Storage and Disposal: Properly store the resin and dispose of any waste resin according to local regulations. Avoid pouring resin down the drain or into the ground.

Remember to always follow the manufacturer’s instructions and safety guidelines when working with resin. If you have any further questions or need more specific information, feel free to ask!

What's the difference between SLA and DLP?

SLA (Stereolithography) and DLP (Digital Light Processing) are two different technologies used in resin 3D printing.

SLA uses a laser directed by a galvanometer to cure the resin. The laser can be moved anywhere along the x and y axes, allowing for precise shaping of the printed object. SLA is known for its high precision and is often used for applications that require fine details.

On the other hand, DLP uses a projector to shine UV light onto a tank containing the resin. The UV light is redirected by tiny mirrors to turn each pixel on or off, creating the desired shape. DLP is generally faster than SLA, especially when printing larger parts or multiple parts at once.

Both SLA and DLP technologies require post-processing steps, such as cleaning the printed object to remove excess resin and post-curing to fully cure the resin.

Why would I use a resin DLP printer over a Polyjet printer?

Resin DLP printers are often preferred over Polyjet printers for several reasons:

  • Speed: DLP printers are generally faster than Polyjet printers, especially when printing larger parts or multiple parts at once. This can significantly reduce the overall printing time.

  • Cost: Resin DLP printers are typically more affordable compared to Polyjet printers. This makes them a more cost-effective option, especially for small businesses or individuals on a budget.

  • Resolution: DLP printers can achieve high levels of detail and precision in the printed objects. The UV light projected by the DLP projector allows for precise shaping of each pixel, resulting in fine details and smooth surfaces.

  • Material Options: Resin DLP printers offer a wide range of resin materials to choose from, including different colors and properties. This allows for greater flexibility in selecting the most suitable material for specific applications.

  • Post-Processing: Both DLP and Polyjet printers require post-processing steps, such as cleaning and post-curing. However, DLP printers generally have simpler post-processing requirements compared to Polyjet printers, which can involve additional steps like removing support material.

It’s important to note that the choice between a resin DLP printer and a Polyjet printer ultimately depends on your specific needs and requirements. It’s recommended to consider factors such as budget, printing speed, resolution, material options, and post-processing requirements when making a decision.