When should I replace my nozzle?
There isn’t a specific time frame in which you should change or replace your nozzle, but generally you should change your nozzle every 3-6 months. This really depends on how often you are using your 3D printer, what kind of filaments you are using, and how high or low the quality of your nozzle is.
Why does my printer nozzle keep jamming up?
The most common cause of nozzle jams, having the nozzle set too close to the bed can prevent the filament from flowing out freely. Aside from the fact that your print quality will almost certainly suffer as the molten filament gets smeared and dragged by the print head, but this can also result in “retrograde extrusion.”
How to fix 3D printer nozzle hitting prints or bed?
A bed that is uneven can easily be the downfall of your 3D printing success, so it needs to be parallel to the X axis and the same distance away from bed to nozzle throughout the platform. Make sure you set your Z endstop so that the nozzle is close to your build platform, while your bed leveling screws are screwed in for a decent amount.
Why does my printer keep clogging up with filament?
Aside from the fact that your print quality will almost certainly suffer as the molten filament gets smeared and dragged by the print head, but this can also result in “retrograde extrusion.” When this happens, filament starts to go back up the nozzle. The pressure buildup because of retrograde extrusion can very easily result in a clogged nozzle.
Why does molten filament come out of the nozzle of a printer?
With the pressure created by the continuous rotation of the extruder gears, the molten filament is forced through the nozzle. The opening of the nozzle is much smaller than the diameter of the filament. This helps maintain a steady pressure in the extruder assembly so that the molten filament oozes out of the nozzle at a consistent rate.