What is a hotend in a 3D printer?
A hotend is the printer's heating module where the filament melts before being extruded through the nozzle. Contains heater block, heatbreak, heatsink and nozzle.
Components
- Heater block - brass/aluminum heating part
- Heater cartridge - 40 W heating element
- Thermistor - temperature measurement
- Heatbreak - separates hot and cold zones
- Heatsink - cooler
- Nozzle
All-metal vs. PTFE
All-metal hotend handles high temperatures (300+ °C) - for ABS, PC, PEEK. PTFE-lined cheaper, max 240-250 °C (PTFE degrades).
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