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Fine Tuning our 3Dresyns in SLA DLP & LCD 3D printers



All our standard 3Dresyns are fine tuned and ready to print with the Form2. 3Dresyns orders which may need fine tuning will include free samples of our Fine Tuners FT1 and LB1.

Fine tuning can be easily done with all Stereolithography SLA DLP & LCD printers (providing the light source wavelength is between 250-410 nm).

Our resins come as standard ready to print; approximately 85 to 95% of our resins printability will come straight out of the bottle as supplied. You will be pleased to find that even then, the performance (printability and mechanical properties) far exceeds our competitor’s resins.

Our 3Dresyns have been designed to print in a broad range of SLA DLP & LCD printers. Nevertheless, our 3Dresyns may need adjustment or fine tuning with accelerants and light blockers to improve their print speed, quality and resolution with different printer types and settings:
  • Print Quality Fine Tuner FT1 is our favourite accelerant additive recommended for increasing the cure speed of our resins in printers working with UV/Visible  light wavelegths up to 410 nm (250-410 nm range), including 405 nm blue Light-emitting Diodes   LEDs, lasers and standard DLP projectors and LCDs. 

 If you are working with very low power 3D printers or with visible wavelengths (above 410 nm) please click here to find more information about our Fine Tuner FT2.

   

     

      • Print Quality Fine Tuner LB1 is recommended for improving resolution and reduce bleeding and "support fusing or merging" of our resins in SLA DLP & LCD printers working with lights from 350 to 410 nm,  including 405 nm blue LEDs, lasers and standard DLP projectors and LCDs. Fine Tuner LB1 is normally used at small dosage with SLA DLP & LCD printers. For dosage guidelines please contact us.

       If you are interested in 100%Safe Biocompatible Light Blockers with the same light blocking performance as Fine Tuner LB1 please click here.

         

        Fine tuning basics

        Original and non original commercial 3D resins usually experience print quality variations depending on specific printer settings and print specifications, including basic printing variables, such as different light power and wavelength, curing or exposure time per layer, layer thicknesses, print sizes and shapes.

        For example, even with the same SLA DLP & LCD 3D printer, any 3D resin that gives relatively good quality prints at a specific layer thickness may suffer basic quality printing problems when printing at higher or lower layer thickness.

        The optimum print quality for each 3D resin can be achieved by increasing or decreasing the power and the curing or exposure time. Unfortunately, not all commercial printers allow modifying these variables and even at their optimum printing settings, after fine tuning, most commercial 3D resins are often too brittle or fragile. Our 3D resins have been formulated to overcome these limitations.

         

        Our hard grades are tough, non brittle. All our flexible grades can be twisted and stretched and do not break when folded.

        Without fine tuning, no 3D resin can reach its optimum performance (print quality/detail) even with the same printer at different designs of different size and shape, specially with complex high detail intricate designs, and different printing settings, exposure time and layer thickness.

        Most commercial SLA DLP & LCD 3D printer manufacturers have significantly limited the opportunity of printer users to adjust the printing settings and resolve basic print problems, allowing most of them just to change the layer thickness, the supports density and their size.

         

        All 3D resins need adjusting, fine tuning, to different printer settings

        3Dresyns designed Fine Tuners to give the opportunity to printer users to have the basic tools to resolve common print quality problems.

        Without fine tuning tools, 3D resin and printer suppliers, cannot provide a single 3D resin for different 3D printers, different print designs and different settings, for example different light sources, laser, LED, DLP projectors, LCD screens, different wavelengths and intensities, different curing or exposure times, different layer thickness, different print sizes and shapes, different supports sizes and densities, etc,.. 

        This technical limitation and need for fine tuning can be applied to all 3D resins in the market place, including original 3D resins from 3D printers manufacturers because often print quality issues appear by simply changing basic printing variables, such as layer thickness, print size and shape, support size and density, etc.

        In fact, to obtain high quality results at different specific printer settings all 3D resins and printing variables need to be adjusted by either fine tuning the printer settings either by adjusting the power and/or the curing or exposure times (when feasible if the printer settings permit) or by fine tuning the resins with our Fine Tuners FT1  and LB1.

          Typical printing problems and solutions  
          Printing problems are evidenced by print failure and/or poor print quality, to say:
          • poor print resolution shown as print and supports overgrowth (bleeding) beyond specifications due to excessive light penetration (Z axis) and/or scattering (XY axis) 
            • Fine Tuner LB1 at small dosage will improve resolution significantly in clear and colored resin systems. Additions are recommended in small steps*
            • a decrease of the dosage of Fine Tuner FT1* with the original resin will improve resolution in clear and colored resin systems
          •  poor printability shown as the resin does not print nor adhere on the build platform and/or prints have missing parts due to under cure
            • an increase of the dosage of Fine Tuner FT1 will increase adhesion on the build platform and cure speed in clear and colored resin systems
          • separation of prints from supports during printing or print breaking can be due to under or over cure of the resin
            • an increase of Fine Tuner FT1 will improve adhesion on the build platform and will help to print the supports if they were too soft due to undercure.
            • a decrease of Fine Tuner FT1 will make the supports less brittle if supports they were over cure.
            • an increase of supports density and tip size will also help to resolve separation of the print from the supports
          • damage “veiling” of the PDMS of the resin tank (vat) even with successful prints due to the use of agressive raw materials
          • others, e.g. unbalanced resins, poor printer maintenance conditions and settings, etc...

           

          The use of a flat printed simple but detailed model such as the shown coin is recommended for fast tuning our 3Dresyns to your printer settings

           

          Fine Tuning clear and colored 3D resins

          To obtain better quality prints for different layer thickness, we recommend adjust:

          • the light power and curing or exposure times if your printer permits it 
          • the dosage of Print Quality Fine Tuner FT1 and LB1 in small steps until optimum results are obtained. Note: avoid overdosaging FT1 and LB1. 

          Opaque colored resin systems do not usually require significant dosage of Fine Tuner LB1 since dyes and especially pigments act as efficient light blockers, improving significantly the XYZ resolution. Light colored and clear resins usually require higher dosage of light blocker to avoid overcure beyond specifications and/or support merging.

           

          Fine Tuning Process 

          Step 1: Select your layer thickness, typically between 10-100 microns, for your clear or colored resin

          Step 2: Select your print settings, curing or exposure time if possible, supports density and tip size. 

          Step 3: Print

          Step 4: Evaluate the quality of your print.

          Option 1: If you are fully satisfied with the quality of your print it is not necessary to fine tune our 3Dresyns.

          Option 2: If you are not fully satisfied with the quality of your print it is necessary to fine tune our 3Dresyn and/or your printing settings. Depending on the origin of the print quality problem, different solutions are available.

          If the problem is caused by undercure of the resin an increase of dosage of Print Quality Fine Tuner FT1 is recommended*. This is reflected by either the print does not adhere to the build platform or the supports are too soft resulting in breaking and separation of the prints from the build platform. Sometimes, the base or the print may break and have missing parts.

          If the problem is caused by overcure of the resin a decrease of dosage of Print Quality Fine Tuner FT1 is recommended (eg diluting its concentration in small steps*)  or an increase of dosage of Fine Tuner LB1. In this case the supports are too brittle resulting in breaking and separation of the prints from the build platform at the tip of the supports. 

          If the resin prints well but has no definition or the supports merged or fused  the problem is overcure in the XY or Z axis beyond specifications due to the combination of excessive kinetics and light penetration:

          • the concentration of Fine Tuner LB1 can be increased in small steps or in bigger steps* if there is excessive bleeding or overgrowth. An overdose of light blocker may decrease the kinetics slowing down the cure significantly and causing print failure (eg separation from the build platform). When this happens is better to dilute its content with a fresh resin sample rather than overdosing with an increase of Fine Tuner FT1* since the combined effect may cause print failure because when light penetration is lower than the Z layer thickness (layers willl not cure nor adhere).

          Following this methodology the optimum dosage of Fine Tuner FT1 and LB1 can be evaluated for your specific printer settings.

          "The optimum print quality and mechanical properties will be achieved with the lowest possible dosage of Fine tuner FT1 to ensure printability and with the lowest possible dosage of Fine tuner LB1 to have maximum resolution." 

          The optimum addition of Print Quality Fine Tuners FT1 and LB1 will be found when the print quality is at its highest, further additions of Fine Tuners will be excessive and printability, resolution and mechanical properties will start to decrease (the prints may become too fragile or not print).

          Once the optimum is known (remember to record it) it can be used for the next prints.

          Please take into account that our different 3Dresyns, from ultra hard and tough to elastic, may require different levels of post added Fine Tuners. 

          We hope you get the best results from our 3Dresyns!

          Enjoy 3D printing with 3Dresyns!

          *Please contact us to consult about Fine tuning 3Dresyns at:

          Note: Separation of the print from the supports during printing is usually due to under or overcure of the resin during printing (too soft or too brittle). This can be prevented by increasing the dosage of Fine Tuner FT1 or by diluting its content, if an excess has been added. Our light blocker Fine Tuner LB1 can also be used to decrease bleeding, cure speed and light penetration.