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It could be that the plastic contains an electric charge because plexiglass can be staticly charged. but it is highly unlikley because the nozzle itself is probably grounded via the heater cartridge and thus removes any charge from the print plastic.
Also the printer is sensitive to static charges (ESD) and this could damage the electronics, so it makes sense that the printers are propperly grounded. If you suffer from any charge you could fix this by 'grounding' the filament and so remove any charge present.
But I highly doubt that PLA of some sort could hold an static charge, because it is plastic, non concuctive and there is not much chance for the plasic atoms to become charged. I have never heard of this and (as an electrical engineer) I think that it is never going to hapen because there is nowhere for electrons to build a charge inside a printer plastic part.
It just doesn't make any sense, but it is nice to wonder abount these kind of topics, good food for tought.
Posted
(edited)
· static charge in printed PLA material
With an ohm-meter, try measuring if the nozzle is grounded indeed. (Edit: do this only when the printer is switched off, and disconnected from the mains supply, of course!)
But glass itself is easily charged, so there is always a possibility that heat and airflow do charge the glass and the lower part of the print, even if the nozzle would be grounded. Or by pulling the print off the glass.
This is guessing, but I think the main charge on models will come from post-processing: grinding, cutting off defects,... And it will depend a lot on the material. Do dust and small particles stick to your prints? Then they are charged.
There do exist anti-static sprays: in the old days we used them on CRT displays. The glass of those big color monitors tended to get so charged up that you could pull sparks of several centimeters, causing sore arms, and burn-pits in the display, due to their 30000 Volt transformers. Maybe you can still find those sprays?
Edited by geert_2
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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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TheodorK 11
It could be that the plastic contains an electric charge because plexiglass can be staticly charged. but it is highly unlikley because the nozzle itself is probably grounded via the heater cartridge and thus removes any charge from the print plastic.
Also the printer is sensitive to static charges (ESD) and this could damage the electronics, so it makes sense that the printers are propperly grounded. If you suffer from any charge you could fix this by 'grounding' the filament and so remove any charge present.
But I highly doubt that PLA of some sort could hold an static charge, because it is plastic, non concuctive and there is not much chance for the plasic atoms to become charged. I have never heard of this and (as an electrical engineer) I think that it is never going to hapen because there is nowhere for electrons to build a charge inside a printer plastic part.
It just doesn't make any sense, but it is nice to wonder abount these kind of topics, good food for tought.
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geert_2 557
With an ohm-meter, try measuring if the nozzle is grounded indeed. (Edit: do this only when the printer is switched off, and disconnected from the mains supply, of course!)
But glass itself is easily charged, so there is always a possibility that heat and airflow do charge the glass and the lower part of the print, even if the nozzle would be grounded. Or by pulling the print off the glass.
This is guessing, but I think the main charge on models will come from post-processing: grinding, cutting off defects,... And it will depend a lot on the material. Do dust and small particles stick to your prints? Then they are charged.
There do exist anti-static sprays: in the old days we used them on CRT displays. The glass of those big color monitors tended to get so charged up that you could pull sparks of several centimeters, causing sore arms, and burn-pits in the display, due to their 30000 Volt transformers. Maybe you can still find those sprays?
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