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3D Printing Troubleshooting: Blocked Nozzle? Here’s the solution

The Problem- You're trying to print a design but whatever you try, nothing comes out of the nozzle. Removing and reinserting the filament doesn’t work as well. Why is it happening? A small piece of filament has been left behind previously in the nozzle after changing spools, often when the filament has snapped off at the end. When the new filament is loaded, the piece of old filament that is left in the nozzle doesn’t allow the new filament to be pushed out. A little printer maintenance can go a long way to reduce the chance of problems like a clogged...