Biggest problem if you want to pause a print and resume a couple of hours after is that either you need to leave the printer on (which doesn't solve your problem).
The heated bed has to stay at temp or the print will pop off when you try to resume. And you have to manually drop the temp of the extruder and probably retract filament a bit also.
So if you want to shut down the printer you need to print on blue tape.
Then you can pause the print and restart at the latest point but you have to do all of the gcode editing manually (with the risk of failing).
As Sander said, it's a secure machine, i'm guessing that people in your office leave some computers running all night long, to me the chance of fire is as big
Anyway putting the printer in a secured office, with no possibility of having something inflammable falling in it would be a good solution i think.
Basically you have a similar chance of having a fire as with a lot of other electronic devices (which is very low!) It is CE approved. Depending on what you will be making there are a lot of shapes/complexities that exceed the 8 hour work-day. For that reason it has to be safe!
Obviously, your practice manager has the right to create the guidelines he finds appropriate. It is an option to pause a print, but I would not recommend to do this overnight, and continue in the morning.
At this stage it is not possible to mark the gcode, and power off.
You could do it manually, but it would require a lot of manual work and a high fail rate.
It is always possible someone has a very clever and creative work around, but this is to my knowledge.
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