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"Material growth and characterisation enabled the creation and manufacture of a 3D printer capable of fabricating PDMS structures using a photo-initiator and a LED curing process. " The PDMS can be cured at room temperature by micro-extrusion direct deposition of PDMS is shown by a custom-made 3D printer with in situ UV cross-linking to aid curing of the PDMS during the 3D printing process. This 3D printer has a great potential to be used as a fast and simple manufacturing technique to produce facial and other prosthesis. ".
Source link: https://doi.org/10.1007/s00170-022-09194-0
As a prototyping and low-volume manufacturing tool, hobbyist and professional users are increasingly interested in "Desktop fused filament fabrication 3D printers. " The inability to know when a defect has occurred rendering the print unusable, is one of the printers' problems. MTouch employs an actuated contact probe with a low-power solenoid, magnet, and hall effect sensor. 100% accurate results were obtained by the MTouch probe, which was much higher than the 74% achieved with a repurposed commercially available bed leveling touch probe. The MTouch was able to detect faults 44% quicker on average, while only increasing the printing time by 8. 4 percent in head-to-head tests against a commercially available print defect detection system. MTouch was able to detect defects In addition, the Spaghetti Detective was unable to detect such things as layer shifting and filament runout/jam. ".
Source link: https://doi.org/10.1007/s00170-022-09278-x
"Introduction Judging the dimensional accuracy of the resulting printed part requires comparison and conformity between the 3D printed model and its virtual counterpart. " The resolution and stability of 3D model samples are determined by a variety of factors, including the print head/laser spot size/screen resolution, build orientation, materials, geometric shapes, and their topology. Materials and methods In total, 12 3D printers manufactured test blocks. A digital measurement was carried out using a Dentsply Sirona Ineos X5 lab scanner to determine the difference between each block produced on each printer using CloudCompare to track the deviation compared to the Master STL to determine the deviation. Although these printers print using different methods, no specific brand of printer technology is more accurate than the others. The evolution of 3D printers that result in budget printers being as reliable, for at least two of the measurements of data collected, as expensive printers is astounding. Conclusion This report shows that the new range of 3D printers can be produced with clinically acceptable accuracy. The results of budget printers and more expensive printers for the X and Z axes were not consistent in the results, although this was not the case for the measurements in the Y dimension, as shown by the present study.
Source link: https://doi.org/10.1038/s41405-022-00108-6
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