Flexible and Semi-Flexible 3D Printing Resins

🌀 Discover our collection of Flexible & Semi-Flexible 3D Printing Resins, engineered to deliver outstanding durability for functional parts, ergonomic prototypes, and tight-fit components. Their low viscosity and fast cure time allow for fine detail reproduction with controlled elasticity, while their optimized formulation ensures elastic recovery, wear resistance, and superior elongation.

Compatible with SLA/DLP printers, these resins offer exceptional durability and versatility across a wide range of applications — including RC prototypes, adjustable jewelry, and everyday-use parts, among many others. 🔄

🔥1Kg Anycubic Tough Ultra Resin, resistant, semi-flexible resin🔥
🔥1Kg Anycubic Tough Ultra Resin, resistant, semi-flexible resin🔥
🔥1Kg Anycubic Tough Ultra Resin, resistant, semi-flexible resin🔥

€31,99
🔥1Kg Anycubic Tough 2.0 Resin, semi-flexible resistant resin🔥
🔥1Kg Anycubic Tough 2.0 Resin, semi-flexible resistant resin🔥
🔥1Kg Anycubic Tough 2.0 Resin, semi-flexible resistant resin🔥

€22,99

Advantages of flexible resin for 3D printers

Flexible resin for 3D printers stands out for its ability to absorb impacts, bend without breaking, and recover its original shape after deformation. Among its main benefits:

High elasticity and tear resistance: Perfect for parts subjected to bending, torsion, or pressure.
Versatility: From functional prototypes to final components, gaskets, protectors, and footwear parts.
Smooth and precise finish: Smooth surfaces, defined details, and pleasant tactile feel.
Compatibility with different technologies: Available for SLA, LCD, and DLP printers.

Recommended applications for flexible 3D resin

Flexible 3D resin is the best option for:

Prototypes of soft parts, gaskets and shock absorbers.
Custom cases, housings and protectors.
Footwear, orthopaedic or wearable components.
Anatomical models and technical parts requiring flexibility and strength.
Vibration or impact absorption elements in engineering and automotive applications.

Key tips for printing with elastic resin 3D printing

Adjust the printing parameters: Use layers between 0.05 and 0.1 mm and follow the exposure times recommended by the manufacturer to avoid sticky or undercured parts.
Optimize the supports: Flexible parts can warp during printing or post-processing. Use well-distributed supports and remove them carefully after curing.
Gentle post-processing: Wash the parts with isopropyl alcohol and perform UV curing in short intervals to prevent them from becoming overly hardened.
Proper storage: Keep the resin in a cool place and shake well before use to ensure a homogeneous mixture.

Comparison between flexible 3D resin and other technical resins

Flexible resin for 3D printers differs from standard resins or tough resins in its ability to absorb impacts and recover its original shape after deformation. While rigid resins are ideal for structural parts and high dimensional precision, flexible resin excels in applications where elasticity and tear resistance are priorities.

Compared to high-temperature resistant resins, flexible resin cannot withstand extreme heat, but offers unique adaptability for gaskets, protective parts, footwear components, and functional prototypes that require bending and twisting. Choosing the right type of resin for the application is key to ensuring the success and durability of your 3D prints.

Guardabarros de bicicleta impreso en resina flexible Anycubic Tough Ultra doblado con las manos - Mr Resin

🔧 Different flexibility levels for every project

In Mr Resin you will find both soft and elastic resins as well as semi-rigid ones, which offer a balance between impact resistance and some deformation. This allows you to choose the exact degree of hardness or flexibility according to your application.

⚙️ Compatible with 405 nm UV printers

All our flexible resins are compatible with LCD/MSLA and DLP printers that use ultraviolet light at 405 nm, such as Anycubic Photon, Elegoo Mars, Halot, Phrozen Sonic, among others. Check each product sheet for its specific parameters.

Frequently Asked Questions about Flexible Resins

To achieve truly elastic and durable parts, fine-tuning your print settings and post-processing workflow is essential. Use thin layers and optimal exposure times to prevent prints from coming out too rigid or tacky. Curing should be done progressively: run short UV light cycles and test flexibility between each one, as over-curing can significantly reduce elasticity. Additionally, choose a flexible 3D printing resin with a Shore hardness rating suited to your application — softer formulas (Shore A 50-60) are ideal for gaskets and dampeners, while firmer options (Shore A 70-90) provide greater structural strength. Store finished parts away from light and heat to preserve their properties long-term.

The main difference lies in the level of detail and surface quality you can achieve. Flexible resin for 3D printing allows you to print parts with complex geometries, thin walls, and smooth finishes that are simply impossible to achieve with flexible FDM filament. Elastic 3D resin also offers greater uniformity in elasticity and better tear resistance, making it ideal for technical or medical applications where precision is critical. If you need soft parts with high definition and tight tolerances, flexible 3D resin is the best option.

Yes, flexible 3D printing resin parts can be dyed or painted, but it's important to choose products compatible with flexible materials. For dyeing, the best approach is to add resin-specific pigments or dyes before printing, achieving a uniform color without sacrificing elasticity. If you prefer to paint after printing, use flexible paints or silicone dyes, applying thin coats to prevent cracking when the part bends. Always test on a hidden area first, and make sure the surface is clean and dry before applying any finish.

Flexible SLA resin excels in applications requiring a combination of precision, elasticity, and wear resistance. It's especially useful for manufacturing gaskets, shock absorbers, protective parts, custom cases, and components for medical devices or wearables. It's also the top choice for anatomical models, simulators, and prototypes that must withstand repeated bending without breaking. Compared to other technical resins, flexible 3D printer resin delivers an added advantage in adaptability and end-use comfort.

To ensure the stability of parts printed with flexible resin, proper design is essential — distribute loads evenly and avoid areas that are too thin. After printing, cure the part uniformly and avoid overexposing it to UV light, as this can make it brittle. During storage, keep parts in a neutral position without folding them or subjecting them to constant pressure, and protect them from direct sunlight and excessive heat. If the part will come into contact with oils, solvents, or chemicals, verify resin compatibility to prevent premature degradation.