Collections of our SLA, DLP, LCD & Inkjet 3D resins



Printing problems and solutions

Overcuring or undercuring?

  • When the printing problem is caused by undercure of the resin an increase of exposure time (eg by using the time needed to cure 1.7-1.8 layers) or an increase of dosage of Fine Tuner FT1 is recommended*. This is reflected by either the print does not adhere to the build platform or the supports and the print 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
  • When the printing problem is caused by overcure of the resin a decrease of exposure time (eg by using the time needed to cure 1.1-1.2 layers) or a decrease of dosage of Fine Tuner FT1 is recommended (eg diluting its concentration in small steps*)  or an increase of dosage of Fine Tuner LB1 Bio. In this case the supports may be 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 cause by overcure in the xy or z axis beyond limits/specifications due to the combination of excessive power, exposure time, too much Fine Tuner FT1, too little dosage of Fine Tuner LB1 Bio or color. Solutions:
      • the light power and exposure time can be decreased (eg by using the exposure time to cure 1.1-1.2 layers)
      • the concentration of Fine Tuner LB1 Bio can be increased in small steps or in bigger steps* if there is excessive bleeding or overgrowth beyond limits/specifications. Note: an overdose of light blocker may slow down the cure too much and causing print failure (eg separation from the build platform or breaking of supports or parts of the print). When this happens is better to dilute its content with fresh resin rather than overdosing with an increase of Fine Tuner FT1* since the combined effect may cause print failure because the thickness of the cured resin may end up being smaller than the chosen Z layer thickness due to excessive light filtering, for example, less than 50 microns (in this case, layers will not cure nor adhere). Remember to repeat the Curing Rate Table, with your desired exposure time range, each time there is any change of power and/or dosage of our Fine Tuners.

    BASICS: 3D Printing and Fine tuning basics

    The optimum print quality for each 3D resin can be fast and easily achieved by increasing or decreasing the dosage of our Fine Tuners, the power and/or the exposure time for certain z layer thickness (if your specific printer permits it).

    Original and non original commercial 3D resins usually experience print quality variations depending on different printer settings, print specifications and printing variables, such as light power, wavelength, exposure time per layer, z layer thickness, print size, shape, angle or slope, etc.

    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 or even by simply changing the angle or slope of the print.

    The optimum print quality for each 3D resin can be fast and easily achieved by increasing or decreasing the dosage of our Fine Tuners, the power and/or the exposure time for certain z layer thickness (if your specific printer permits it).

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

    In practice even at their optimum printing settings, most commercial 3D resins are often too brittle or fragile. Our 3D resins and Fine Tuners have been designed to help you to overcome these limitations. 

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

    Our Fine Tuners give the opportunity to printer users to resolve any basic and common print quality problems.

    In fact, to obtain high quality results (maximum resolution and detail) at different printer settings all 3D resins and printing variables can be fine tuned by either fine tuning the printer settings: adjusting the power and the exposure time if the printer permits it, and/or just by fine tuning our resins with our Fine Tuners such as FT1  and LB1 Bio. Our Fine Tuners are ideal for overcoming the printing  limitations of closed mode "black box" printers.

    Typical printing problems and solutions  

    The picture below is a typical example of bleeding evidenced by support fusing or merging due to overcure beyond limits in the z direction.

    On the other hand, the picture below is a clear example of bleeding evidenced by poor resolution due to scattering in the xy directions. 

    As mentioned before printing problems are evidenced by print failure and/or poor print quality. Several simple and resolutive solutions will be explained in order to overcome the following printing problems:
    • poor print resolution shown as print and supports overgrowth (bleeding) beyond specifications due to excessive cure beyond specifications/limits:
      • a decrease of light power and exposure time will improve resolution if your printer permits it
      • an increase of our Fine Tuner LB1 Bio at small dosage will improve resolution significantly in clear and colored resin systems. Additions are recommended in small steps *
      • a decrease of 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 power and/or exposure time (for curing both, the first 2 adhesive layers and the standard layers) and/or dosage of Fine Tuner FT1 will increase adhesion on the build platform and will help to print the supports and the print if they were too soft due to undercure
    • poor printability shown as the resin does not print and/or prints have missing parts or  suffer separation from supports during printing due to over cure of the resin (common when printing brittle 3D resins)
      • a decrease of power and/or exposure time and/or Fine Tuner FT1 will make the supports and print less brittle
      • an increase of our light blocker Fine Tuner LB1 Bio will make the supports and print less brittle
      • an increase of supports density and tip size will also help to resolve separation of the print from the supports

      The use of a flat printed simple but detailed model such as the shown coins 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 exposure times if your printer permits it 
      • the dosage of Fine Tuner FT1 and LB1 Bio in small steps until optimum results are obtained. Note: avoid overdosing FT1 and LB1 Bio

      Opaque colored resin systems do not usually require significant dosage of Fine Tuner LB1 Bio 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.

      When too high power and/or long exposure times are chosen (usually exposure times longer than the needed for curing more than 2 layers, for example more than 100 microns) often resolution problems appear, "bleeding", because the accumulated excessive energy dosage may provoke the cure of the resin around the print, beyond its limits or specifications.

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

        "The optimum print quality, speed 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 Bio to have maximum resolution." 

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

        Once the optimum is known (remember to record and report it) since it can be used for your next prints and can be made ready to use for your next orders!

        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 your prints!

        Enjoy 3D printing with our 3Dresyns!

        *Please contact us at: info@3Dresyns.com