Description
If the lack of resolution is due to overcuring it is recommended the use of Fine Tuner VAM LB3 Bio ULWA in increasing steps of 1% to reduce gradually overcure of the resin beyond specifications and obtain optimum resolution, precision, and dimensional accuracy of your VAM prints in your specific VAM printer settings. The use of Fine Tuner VAM LB3 Bio ULWA is essential for increasing the print resolution, precision, and dimensional accuracy when printing VAM resins with VAM printers.
Resolution, precision and dimensional accuracy
The above shown coin can be used as calibration file for VAM printing. 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 three 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 as shown 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 (100 microns) 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 (300 microns) and the % difference is 0.3/30x100=1% which indicates the relative dimensional accuracy in the xy axis.
3Dresyns provides for free more detailed Instructions for Use IFU, upon request and after ordering, for selecting the best printing settings of VAM resins in your specific VAM printer:
- Our calibration stl files (including the coin shown above: 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 VAM 3D resin in your VAM 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
Fine Tuner VAM LB3 Bio ULWA is supplied as a kit, which contains the product, one graduated beaker and one empty 100 mL opaque bottle to measure, mix, keep and protect the 3D resins from daylight. Please do not expose any 3D resins to natural or room light to prevent their curing.
Note: Fine Tuner VAM LB3 Bio ULWA can crystallise at low temperature. A gentle warming (use microwave with extreme caution, water bath is best) and shake will redissolve the crystals.