When we talk about 3D printing, we almost always focus on the filament, temperature, or the heated bed. But there's a factor that often goes unnoticed until your part warps or becomes riddled with imperfections: carbon. I'm not referring to carbon fibers, but to the residue that builds up in the nozzle and ruins even the best-calibrated model.
How Carbon Residue Affects Your Extruder's Precision 🛠️
With continuous use, thermoplastic filaments generate carbonized deposits inside the hotend. This happens when the temperature exceeds the material's degradation point or when there are excessive retractions. The result is an irregular flow that causes gaps, weak layers, or partial clogs. To avoid this, it is recommended to clean the nozzle with calibrated needles and use quality filaments that contain fewer contaminating additives. Maintenance every 50 hours of printing can make a difference.
Cleaning the Nozzle: The Task We All Put Off Until It Fails 🔥
We've all been there: you see the first layer isn't sticking, you check the leveling, change the profile, pray to the 3D printing gods... and finally discover that the nozzle looks like a chimney after a barbecue. The worst part is that cleaning it isn't as epic as it seems. With a torch, some pliers, and patience, it's as good as new. But of course, we always prefer to blame the software rather than get our hands dirty.