Mini Hotend

Description

Benefits:

• Designed to be light for fast prints.
• Ships pre-assembled.
• Cylindrical heater for optimal and symmetrical heating of material.
• Thermistor mounted directly in the nozzle for more realistic temperature reading of the material as it comes out the hotend.
• Small, compact fan.
• Uses the new Semitec 104NT-4-R025H42G thermistor.
• A second thermistor can be added to the nozzle for dual thermistor setup.
• Mounts using 2 x M3 screws (not included) instead of a groove, which is not the most secure method.

If you want to use the hotend for a direct drive rather than a bowden setup, you need to remove the push-fit and insert a small PTFE liner or you can use a spacer. The heatsink has a chamfer under the push-fit to ensure your filament transitions smoothly into the channel if you decide to use it as direct drive.

Technical specifications:

• Maximum recommended operating temperature: 270 Celsius
• Runs on 12V
• For 1.75mm filament
• Aluminum heatsink
• Stainless steel 303 heat break
• Heater resistance: 3.6 – 4.4 ohms (You need to auto PID tune the heater. For smoothieware firmware this is easy to do with the auto-PID tuning settings)
• 0.4mm brass tip with dual thermistor capabilities
• Thermistor connector:  2-pin 2.5mm JST RCY Female Connector.
• Heater connector: Molex #0436400201 Female connector

Watch the video below to see how well the heat is contained under the heat break for a sharp transition of temperature! Note that the overlap of the hotend and the thermal image is slightly mis-aligned due to the FLIR camera being too close to the hotend (the camera is supposed to be at least a foot away for the two to align).