How to choose the right 3D printing material?

Let us help you find the right resin for your needs: detailed guidelines to select the right 3D resin for your needs in sequential steps:

  1. If you are after basic "me too cheaper" resins for fast modelling and prototyping order our basic 3D resins for conceptual design

  2. If you are after basic eco friendly 3D resins order our 3D resins for fast modelling and prototyping

  3. If you want ultra tough and durable functional engineering materials order our 3Dresyns "like" best functional engineering plastics


    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) 

              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 modulus: the 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: or by whatsapp for solving your unmet needs