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· UM3 printing T-glase or nylon for COVID visors
I would at least try a couple in PLA. I have seen others who made things in PLA for emergency use too, recently. And I have also made prototypes in PLA for single use, to be desinfected with the usual 70% alcohol, or with some sort of chlorine solution (not sure about exact formula).
3D-printed tools are never optimal due to the pores, voids, and irregularities that collect "finger-mud". But this is for all materials, even PET and nylon. So you should make people aware that this is only an emergency solution, and that these pores are the draw-backs of this technology.
If you would be familiar with ABS printing, you could do acetone-smoothing until it has a high-gloss. (I am not, so I can't give tips.)
Acetone-smoothing also works on PLA (most of them), if printed in thin layers, but far less than on ABS. It tends to close some of the tiny gaps, but not bigger ones, and does not produce high-gloss surfaces.
The only real disadvantage of PLA is that it is bio-degradable, but I don't know how fast and how much is it eaten by hospital bacteria, if any? At least, bacteria haven't eaten my sifts and tools in my lab, even not the always moist ones in the sewer.
The advantages of PLA might outweight the disadvantages here: it prints fast, has good layer-bonding, good bed bonding, well known printing parameters, predictable results with very few failures.
If you print in thin layers (0.06mm or 0.1mm) at slow speeds, it is watertight. If printed at higher speeds and higher layers (0.3mm), it is not watertight, in my experience.
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Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
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geert_2 557
I would at least try a couple in PLA. I have seen others who made things in PLA for emergency use too, recently. And I have also made prototypes in PLA for single use, to be desinfected with the usual 70% alcohol, or with some sort of chlorine solution (not sure about exact formula).
3D-printed tools are never optimal due to the pores, voids, and irregularities that collect "finger-mud". But this is for all materials, even PET and nylon. So you should make people aware that this is only an emergency solution, and that these pores are the draw-backs of this technology.
If you would be familiar with ABS printing, you could do acetone-smoothing until it has a high-gloss. (I am not, so I can't give tips.)
Acetone-smoothing also works on PLA (most of them), if printed in thin layers, but far less than on ABS. It tends to close some of the tiny gaps, but not bigger ones, and does not produce high-gloss surfaces.
The only real disadvantage of PLA is that it is bio-degradable, but I don't know how fast and how much is it eaten by hospital bacteria, if any? At least, bacteria haven't eaten my sifts and tools in my lab, even not the always moist ones in the sewer.
The advantages of PLA might outweight the disadvantages here: it prints fast, has good layer-bonding, good bed bonding, well known printing parameters, predictable results with very few failures.
If you print in thin layers (0.06mm or 0.1mm) at slow speeds, it is watertight. If printed at higher speeds and higher layers (0.3mm), it is not watertight, in my experience.
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