46 Hours full tilt with no problems at all. You should be fine. Just make sure you keep a lookout for the filament and use a new spool if possible.
How big can I print on Ender 3?
All three of the Ender 3s have an advertised and usable print area of 220 x 220 mm. However, the size of the build surface actually measures 235 x 235 mm. That means, in theory, an astonishing 14% of the print bed is going unused! Keep reading to learn more about why this is and what you can do about it.
Is Ender 3 a fire hazard?
The Ender-3 and Pro models are known to spontaneously combust on account of counterfeit XT60 connectors, which act as quick disconnects between the PSU and the heated bed. The fire hazard is attributed to poor electrical contact and questionable fire resistance of the plastic connector housing.
Is it safe to leave a 3D printer on all night?
You should not leave your 3D printer unattended while printing as it is not safe. Many examples show fires breaking out and spreading around the room. There are ways to make it more likely to be safer such as using a full metal enclosure and having upgraded safety firmware.
Print Faster on Your Ender 3 Style Printer Using Tricks in Cura
Ultimate Beginner’s Guide to 3D Printing – With Creality Ender …
How to Stop and Resume a 3D Print Overnight on the Creality …