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Guidelines to select the right 3D resin for your needs

How to choose the right 3D printing material?

Watch it! Are you after me too cheaper eggshell-like "fragile" materials? 

or are you after super tough and durable materials like golf or bowling balls?

Let´s help you find the right resin for your needs: basic guidelines to select the right 3D resin for your needs in sequential steps:

If you are after basic "me too cheaper" resins for fast modelling and prototyping order our 3D resins for beginners
If you are after basic eco friendly 3D resins order our 3D resins for fast modelling and prototyping
If you want ultra tough and durable functional engineering materials order our 3Dresyns "like" best functional engineering plastics

    How to navigate around 3Dresyns website 

    By clicking on the horizontal orange header bar on the top of the screen, you will access the 3Dresyns Ordering Process Guidance.

    As shown below discover our 3Dresyns collections (full set of square windows with orange background) by clicking Home (the logo of 3Dresyns positioned on the top left of the screen) or search your resin on the main menu positioned vertically on the left of the screen below the 3Dresyns logo. Both ways will lead you to 3Dresyns unique comprehensive portfolio of resins. 

    On the main menu or in collections you may choose our direct to print 3D resins for Formlabs printers (Form 2 and Form 3)

    You may also browse for the right resin for your needs, either in the main menu or in collections:


    Resins for SLA, DLP & LCD printers can be selected by level and cost:

    1. Level 1: Low cost for prototyping
    2. Level 2: Eco friendly for prototyping
    3. Level 3: STD with basic functionality
    4. Level 4: NextGen for functional materials
    5. Level 5: Specialty for specialty materials
    6. Level 6: Best engineering materials

          Resins for SLA, DLP & LCD printers can be selected by technology or application:

          1. Best engineering resins
          2. Low cost resins for fast prototyping
          3. Eco friendly resins for fast prototyping
          4. Resins for printing aligners
          5. Dental resins
          6. Biocompatible resins
          7. 3D resins for sacrificial molds
          8. 3D resins for printing durable molds
          9. Resins for viscous & hot lithography
          10. Casting resins for Jewelry
          11. Waxes and casting resins
          12. Silicone like resins
          13. Safe resins for schools
          14. Resins for microfluidics
          15. 3Dresyns for otoplastics and hearing devices
          16. 3Dresyns for making injection molds for otoplastics hearing devices
          17. Conductive resins
          18. 3D adhesives
          19. Biodegradable resins
          20. ESD resins
          21. Super Absorbent resins
          22. Resins for ophthalmic lenses
          23. Ferroelectric resins
          24. Printing plates
          25. Resins for ceramics
          26. Resins for glass
          27. UV nanoimprint lithography
          28. Resins for metamaterials
          29. 3D additives
          30. 3D reinforcing composites
          31. Cleansing products

          Resin for Inkjet printers can be selected by technology or application:

          1. Introduction to our IJ resins
          2. Standard IJ resins
          3. Next Generation IJ resins
          4. Specialty functional IJ resins
          5. Engineering & Bio IJ resins
          6. Dental IJ resins
          7. Otoplastic IJ resins
          8. Microfluidic IJ 3D resins

          If you want to learn more about us, our products, services and about 3D printing and Additive manufacturing then read our footer:

          Alternatively, select your resin by a key physical property such as Shore hardness

            What is the Shore hardness of a material? how is it measured?

            The Shore hardness is measured with a durometer, which is an affordable device for measuring the hardness of a material, typically of polymers, elastomers and rubber-like materials.

            Higher numbers on the scale indicate a greater resistance to indentation and thus harder materials. Lower numbers indicate less resistance and softer materials

              There are several scales of durometer, used for measuring the hardness of materials. The most common are the type D, A and OO Shore hardness scales:

              The Shore D hardness scale measures the hardness of hard rubbers, semi-hard and hard plastics: hard 3D resins
              The Shore A hardness scale measures the hardness of flexible rubbers that range in hardness from very soft to soft to medium soft rubbers: soft 3D resins
              The Shore O (and OO) hardness scale measures ultra soft rubbers and gels that are extremely soft: ultra soft resins
                If you do not have a Shore durometer you can get one for 30 Euro in Amazon
                Get a D, A or O scale durometer depending on the type of hardness materials you want to work with

                  Identify the ideal Shore hardness of your specific application:

                  Search and find the right 3Dresyn among our thousands of 3D resins by simple key properties: 

                  Click on SEARCH and write the Shore hardness of your preliminar choice eg Shore hardness D80 or directly D80

                  All our 3Dresyns with their Shore values will appear in your search (letter D,A or O followed by 2 digits without any space e.g. D90)

                  Our 3Dresyns can be easily found with these decreasing hardness values (click on your chosen D, A or O value):

                  D90 Ultra Hard plastic material
                  D85 very hard plastic material
                  D80 hard plastic material
                  D70 medium hard plastic material
                  D60 medium hard plastic material
                  D40  hard rubber-like material
                  D30 hard rubber-like material
                  A90 hard rubber-like material
                  A80 semi hard rubber-like material
                  A70 low hard rubber-like material
                  A60 low hard rubber-like material
                  A50 soft rubber-like material
                  A40 very soft rubber-like material
                  A30 very soft flexible material 
                  A20 very soft elastic material
                  A10 very soft super elastic material
                  O50 ultra soft gel-like material
                  O30 ultra soft gel-like material

                  For each Shore hardness materials can be more or less rigid and have higher or lower overall mechanical strength

                    Identify the ideal rigidity by Young´s modulus and Strength of your 3D resin

                    The flexibility and rigidity of a material can be identified by its Young´s or Elastic modulusthe higher its value the higher the rigidity.

                    For each rigidity or Young´s modulus value materials can have higher or lower overall mechanical strength
                    Do not waste time, print ultra resistant functional engineering materials with our unique 3Dresyns "like" best functional engineering plastics

                    Basic information about Young´s modulus values:  "The higher the value, the higher the rigidity"

                    Ultra rigid 3D resins have Young´s modulus >3000 MPa
                    Rigid 3D resins have Young´s modulus >2000 MPa
                    Semirigid and semiflexible 3D resins have Young´s modulus 1000-2000 MPa, typically they are rigid at thickness >2-3 mm and semi flexible at thickness <2-3 mm
                    Flexible 3D resins have Young´s modulus <1000 MPa, typically they are rigid at thickness >3-4 mm and flexible at thickness <3-4 mm
                    Elastic 3D resins have Young´s modulus <1-10 MPa, typically they are flexible even at very high thickness

                       Basic information about mechanical strength values:

                      Ultra rigid 3D resins break without significant deformation and tend to be fragile due to their excessive rigidity
                      Ultra tough and rigid 3D resins such as 3Dresyn PEEK-like can reach >100-130 MPa in flexural strength. They are very resistant, breaking with minor deformation
                      Tough and semi rigid 3D resins, such as 3Dresyn Nylon-like can reach incredible relative flexural strengths >40-80 MPa and can be bent upon relatively high pressure without breaking at less than 2 mm thickness
                      Semi-flexible 3D resins with flexural strengths<50 MPa are typically deformable, without breaking, upon pressure at less than 3 mm thickness
                      Flexible and elastic 3D resins naturally have low flexural strength <1-10 MPa and break relatively easily

                        Alternative SEARCH by keywords

                        Click on SEARCH and add to your chosen Shore other relevant keywords relevant to your product of interest. Examples:

                        By product type keywords:

                        • 3Dresyn for searching our all our 3D resins collections
                        • Fine Tuner FT for searching our photo accelerants
                        • Fine Tuner LB for searching our resolution-ers or resolution increasers
                        • 3D-ADD for searching our functional additives such as:
                          • rigidity modifiers, matting and opaquer additives, non stick and resistance additives, conductive additives, adhesion promoters and primers, crosslinkers, degradation promoters and testers, uv radiation protection, densifiers, flame and fire retardants, radio opaque agents, magnetic agents, polishing pastes, etc...

                        By property keywords:

                        By color keywords

                        By application keywords:

                        By printing or manufacturing technique keywords:

                        By other keywords

                        By your own. Be creative and user your own combination of keywords for searching the right 3Dresyn for your unmet needs: SEARCH 

                        Key selection guidelines for selecting any type of 3D resin:

                        • acknowledge that any material may appear more or less rigid or flexible depending on their thickness
                        • metal foils are flexible but thick metal parts are rigid
                        • soft rubber films are flexible but very thick parts are rigid
                        • each material appears flexible up to certain thickness at which starts to appear more and more rigid while increasing its thickness
                        • rigid materials with rod shapes do bend upon pressure below certain thickness
                        • flexible materials with rod shapes do not bend upon pressure above certain thickness
                        • identify the smallest and thinnest part or "minimum feature size" of your 3D printable object.
                        • identify the minimum required relative rigidity of the minimum feature size
                          • thicker feature sizes will appear more rigid thanks to their thicker sizes
                          • avoid selecting too rigid materials for your application needs since excessive rigidity results in reduced toughness or excessive fragility, such as "eggshell-like" materials: glass, ceramics, etc,..which are rigid but fragile!  
                          • avoid selecting too flexible materials for your application needs since excessive flexibility results in reduced toughness, flexural strength and tear resistance, such as too flexible and easy to break elastomers 
                          • for rigid materials select the minimum required rigidity of the smallest feature size of your prints to maximise mechanical strength since thicker parts will appear more rigid
                          • for flexible materials select the maximum and the minimum required flexibility of the smallest and biggest feature size of your prints to balance or average both to satisfy your needs


                        Typical experimental findings and thumb rules by decreasing Shore values. From D90 downwards!!

                        • the higher the Shore D (above D90 range) the higher the rigidity (Young´s modulus) but due to excessive rigidity, mechanical properties such as flexural strength and impact resistance can decrease 
                        • the higher the Shore D (D70-D90 range) the higher the rigidity (Young´s modulus) and mechanical properties of most rigid materials
                        • in the Shore D50-D80 range, sometimes softer D60 resins can be more rigid and mechanically resistant that harder Shore D80 resins, consequently the natural hardness-rigidity-strength direct proportion "formula" can be reversed. This happens with some of our unique Engineering 3D resins which contain highly resilient bio based building blocks, which are ideal for designing eco friendly ultra resistant functional engineering bio materials!  
                        • From Shore D50 downwards materials increase their flexibility but decrease their mechanical strength. Choose our NextGen 3dresyns for engineering or our Bioflex Monomer Based for biocompatible flexible materials
                        • the higher the Shore A the higher the mechanical properties for most flexible and elastic materials: choose as high as possible Shore A resins for maximum overall mechanical performance
                        • From Shore A50 to A10 materials become very soft and typically are elastic and prone to have poor mechanical strength. Choose our elastic NextGen 3dresyns for engineering or our Bioflex Monomer Based for biocompatible elastic materials 

                        Key selection guidelines for selecting engineering functional materials:

                        •  Our Enginering 3Dresyns "like" engineering materials are ideal for Engineering functional applications where ultra high durability and mechanical performance are required. These 3Dresyns contain bioplastics from renewable resources and are more environmentally friendly than petroleum based plastics. 
                        • Our Enginering 3Dresyns "like" best high performance engineering plastics are supplied with access to all our colors and functionalities. They are supplied with a relatively low or high viscosity for even increased overall mechanical performance:
                          • High Viscosity versions exhibit increased mechanical properties and are ideal for printers having heating systems for printing at >25ºC
                          • Low Viscosity versions exhibit relatively lower, but still quite high, mechanical properties and are ideal for printers without any heating systems for printing at <25ºC and >25ºC
                          • Learn more about the Benefits of printing with heated printers

                          Other key selection guidelines for selecting "green" biocompatible materials:

                          • Both, our monomer based MB and Monomer Free MF Biotough 3D resins exhibit similar strength for each Shore value
                          • Monomer free MF versions do not contain any monomers, consequently the risk of causing skin irritation is minimised
                          • ULWA Ultra Low Water Absorption versions are more hydrophobic and are less cytotoxic than the standard versions since they exhibit lower risk of  extractability by water
                          • Our monomer based MB flexible and elastic biocompatible 3D resins Bioflex and Bioelastic have superior mechanical strength than our Monomer Free MF versions for the same Shore value, which are only recommended for bioprinting applications without any significant strength requirements

                          Basic & simple screening of 3D resins properties for selecting the right 3D resin before printing your final prints

                          • print directly a wedge with your chosen 3D resin
                            • adjust the wedge size to the total surface of your prints on the build platform
                            • print the wedge directly on the build platform. If it breaks during its separation  with the spatula due to excessive adhesion to the platform, then print it with supports or sidewards to facilitate its removal
                          • use the printed wedge to screen the peeling or separation force, the  flexibility/rigidity as well as the fracture resistance of the material 
                          • position the wedge vertically and force it sidewards gently and firmly to measure the thickness at which the wedge does not deform or bend at all. This value in mm will give an indication of the thickness threshold at which the material becomes rigid. Below this  thickness threshold the material is flexible
                          • position again the wedge vertically and force it sidewards strongly and firmly until it breaks to measure the maximum thickness at which the tip of the wedge breaks. This value in mm will give an indication of the toughness of the material. The lower the thickness of the remaining wedge the tougher the material!!
                          • design a thinner or thicker, a shorter or longer wedge depending on your needs, which will depend on the relative size of your printed parts
                            • relatively thinner and longer wegdes are ideal for small size works
                            • relatively thicker and shorter wedges are good enough for large size works
                            • relatively longer wedges help to identify smaller differences in rigidity/flexibility and in toughness since the maximum thickness, at which the tip of the wedge deforms and breaks upon pressure, can be measured with more precision
                            • print a wedge horizontally, without supports in your printer
                          • depending on your initial results, test or not a more rigid or flexible resin, taking into account your required flexural strength and elastic modulus
                          • for final mechanical validation purposes print dog bones and bars if needed to comply with ASTM or ISO testing standards.

                          Discover our consulting services:

                          Click on these links for our full printing consulting and our 3D resin customisation services:

                          Soluble sacrificial resins

                          Resins for printing injection molds

                          Biocompatible resins for biomedicine

                          Orthodontic & dental resins

                          Silicone resins

                          Biodegradable resins

                          Microfluidic 3D resins

                          UV nanoimprint lithography

                          Resins for ceramics and metals

                          Resins for scaffolds

                          Conductive resins for electronics

                          Resins for bio sensors

                          Reinforced composite resins

                          Viscous & hot lithography resins

                          Resins for security systems

                          Piezoelectric & ferroelectric resins

                          4D reversible resins

                          3D resins for printing plates

                          Two photon polymerization

                          Resins for multiwavelength printing

                          Resins with variable composition

                          Resins for VAM


                          3Dresyns also provides synthesis & formulation consulting for solvent, water & UV resins, inks and coatings

                          You are welcome to contact us! We welcome your questions to help you to choose the right 3D resin for your needs!!
                          You will receive a fast  response from us since we work 24/7!!
                          Contact us at: info@3dresyns.com or by whattsapp for solving your unmet needs