Instructions for Use "IFU"

Standard settings for printing most of of our 3D resins in most SLA, DLP & LCD printers:

  • Z layers are typically between 50-100 microns. The use of lower Z layers may require tuning of Z axis resolution with our Fine Tuner LB1 Bio, which can be sent as free sample upon request
  • Exposure times are typically between 1-10 seconds for the fastest resins and 10-20 seconds for the slowest resins 
    • Depending on the power of your printer, the optimum exposure times will increase or decrease for certain Z layer thickness
    • Selection of the optimum exposure times is fast & easy with our printing instructions*
  • Typically 3 adhesion or bottom layers at 80 seconds are enough for having good cure and adhesion on the build platform for most resins
  • Light off delay: 2 seconds
  • Lift distance: 10 mm
  • Lift Speed: medium value of the scale
  • Retract speed: medium value of the scale
  • Printing temperature: before printing warm viscous 3D resins, protecting them from room light to prevent their light curing, to around 30-35ºC to reduce their viscosity and adhesion to the resin tank
    • low viscosity resins do not require any warming 

Calibration of 3D resins in 3D printers

Our free supplied calibration files will help you choose the right balance of printing speed, resolution, precision, and dimensional accuray of your prints (see 3Dresyns calibration file of the coin below with resolution up to to 2 microns).

Clearing the box is easy with our calibration instructions, which will show you to choose the right exposure times for your chosen z layer thickness, as shown in this video:

Basic simple scientific methodology for non-scientists

By taking measurements of the curing of 3D resin drops at different times, such as 5, 10, 15, 20, 25, 50, 75, and 100 seconds, a fast & easy fingerprint is obtained of the cured thickness of the 3D resin at different times in your printer. Glass slides of 1 mm thickness or a FEP film can be used as clear support for curing the drops. The fingerprint of cured thickness vs time provides the required information for choosing the right exposure times for different z layers in your specific printer status, since light power of printers vary significantly from printer to printer, and decays naturally upon time, affecting the thickness vs time fingerprint.   

Instructions For Use IFU*

3Dresyns provides for free more detailed Instructions for Use IFU, upon request and after ordering, for selecting the best printing settings of our resins in your specific printer:

  • Our  calibration stl files (including the horizontally positioned coin shown above: most critical or difficult orientation for getting high z axis accuracy) are available for confirmation of printability, and for determining the xyz printing resolution, precision,  and dimensional accuracy of the chosen printing settings in your existing printer, before printing your own designs
  • Our IFU will provide you a full fingerprint of the achievable printing speed, resolution, precision, and dimensional accuracy of your chosen 3D resin in your printer
  • The optimum printing settings for your chosen balance of printing speed, resolution, precision, and dimensional accuracy will be chosen by you, following our detailed IFU, with just some basic calibration steps

The difference between resolution, precision and dimensional accuracy

Resolution refers to the range of detail or minimum feature size which can be printed with detail. As shown on the surface of the coin the smallest feature size  can be easily evaluated by reading the smallest concentric circle line on the surface of the printed coin, since each circle line has engraved its width and depth in decreasing order from 500 to 2 microns. On the other hand, precision refers to the capability to repeatedly print or "reproduce" the same dimensions of prints over and over again with certain variation. Keep in mind that extremely precise prints are not necessarily dimensionally accurate unless the tree spatial xyz dimensions of prints coincide with the three spatial xyz dimensions of the designed stl files which define the theoretical dimensions of prints as defined in the stl files.  

Dimensional accuracy of 3D prints refers to how close the three spatial xyz dimensions of 3D prints are to the theoretical three spatial xyz dimensions of designed prints as defined in the stl file before printing. The stl file of 3Dresyns flat coin has 2 mm thickness (z axis) and 30 mm diameter (xy axis). The relative dimensional accuracy in the xyz axis can be easily measured by measuring the real diameter (xy axis) and thickness (z axis) of the horizontally positioned flat coin. For example, if the thickness of the printed coin is 2.1 mm.  The difference between the theoretical and real value is 0.1 mm and the % difference is 0.1/2x100=5% which indicates the relative dimensional accuracy in the z axis. The same principle applies to the xy dimensional accuracy. If for example the diameter of the printed coin is 30.3 mm.  The difference between the theoretical and real value is 0.3 mm and the % difference is 0.3/30x100=1% which indicates the relative dimensional accuracy in the xy axis.   

Basic tools needed for calibration:

    Cleaning and postcuring of prints:

    Optional: Custom fine tuning of 3D resins for custom optimum balance of printing speed, resolution, precision and dimensional accuracy

    Our SLA, DLP and LCD 3Dresyns can be fine tuned even further with our photoaccelerants and resolution increasers (resolutioners) for self-tuning their printing speed, resolution, precision, and dimensional accuracy with different printer types and printing settings, such as specific light power, exposure time per layer, z layer thickness and orientation of prints.

    Free samples of our photoaccelerant Fine Tuner FT1 and of our resolutioner Fine Tuner LB1 Bio will be sent for self-tuning if necessary and upon request to provide maximum control and balance of printing speed, xyz resolution, precision and dimensional accuracy.

    Learn more about Fine Tuning additives for custom fine tuning of printing speed, resolution, precision, and dimensional accuracy

    Black box printing vs clear box printing*   

    If you are after a "plug & play" printing solution, without any specific technical and safety requirements, then consider purchasing the original non-functional "fragile" & "me too cheaper" 3D resins supplied with the printers. For certain time they will print certain basic 3D resins, but sooner or later will fail due to several reasons. Learn about the common reasons for printing failure: 

    On the other hand, if you need to print  technical functional materials with constancy (without variability) with high resolution, precision, dimensional accuracy, mechanical strength, and safety, and if you need specific functionality and performance properties, then explore our diverse 3D resin offering of multifunctional resins and 3D printing consulting services. 

    Do you need 3D printing consulting?

    If you are fighting with your existing printer in a "black box" approach and feel that you need more control and understanding of the fundamental 3D printing variables affecting the performance, reliability and reproducibility of your work, or in case that you do not have a printer yet, or need a new one, and do not know yet which printer to buy? Then, you may consider ordering our 3D consulting and training services for helping you to choose the right 3D Printing System for your specific needs and goals, which include recommendations of all the required instrumentation, tools, materials, instructions and training for professional 3D printing: 3D printing consulting

    *Note: Instructions for Use IFU are sent upon request for selecting the best printing settings of our resins in your specific printer. After placing your order request our IFU by email to: info@3dresyns.com