TZ-V6 2.0 High-Flow Hotend, 24 V / 48 W, for 1.75 mm Filament

Compact TZ-V6 2.0 hotend for 1.75 mm filament, designed for 24 V systems with a 48 W ceramic heater and a Semitec 104NT-4 thermistor. The assembly combines a lightweight heatsink, titanium heatbreak, nickel-plated chromium-zirconium copper block and a hardened-steel TZ-V6 nozzle with a 0.4 mm outlet.

Why choose the TZ-V6 2.0

• Compact and lightweight assembly: stated weight of 31.8 g and nominal overall length of 62.3 mm.
• Responsive heating: 24 V, 48 W ceramic heater integrated into a nickel-plated chromium-zirconium copper block.
• Optimised thermal path: titanium heatbreak with a stated 0.25 mm wall and a chromium-zirconium copper sleeve around the cold section.
• Wear-resistant nozzle: hardened SKD11 steel, DLC treatment and stated HRC 60+ hardness, suitable for abrasive materials when the filament manufacturer permits a 0.4 mm outlet.
• Serviceable design: removable heatsink and threaded replaceable nozzle, so the complete hotend need not be replaced for normal nozzle wear.
• Up to 300 °C: published maximum for the complete assembly, including heater and sensor.

Technical specifications

The 33 mm³/s figure is a published maximum, not a guaranteed speed. Actual performance must be tested with the polymer, temperature, nozzle diameter, extruder and cooling used. Set a conservative volumetric-flow limit in the slicer and increase it through testing instead of copying a universal linear speed.

Materials and architecture

The heater block uses nickel-plated chromium-zirconium copper to combine heat transfer with surface protection. The heatbreak uses a titanium-alloy tube and a chromium-zirconium copper sleeve around the cooling section. Two titanium screws join the block to the heatsink and reduce mechanical load on the thin tube.

The nozzle screws into the block and seals against the end of the heatbreak. This layout makes the nozzle replaceable and is intended to reduce leakage risk, but it does not replace correct assembly and tightening. No internal gap should remain between the sealing faces.

Mounting and compatibility

The upper section has a collar geometry with a 12 mm centre section, 16 mm shoulders and a 6 mm dimensioned area. The body also includes M2.5 threads, 3.5 mm deep, for dedicated mounting. Check the drawing, nozzle-tip position, heatsink clearance, carriage mount and cooling duct before printing or purchasing an adapter.

• Ender-3, Ender-3 Pro, CR-10 and CR-10S: integration is possible with a compatible mount; do not assume it directly replaces the original MK8 hotend. Check the carriage, ducts, Z height, cooling, voltage and connectors.
• Voron V0.1 and Voron 2.4: the manufacturer presents these applications using the shown mounting holes, but a toolhead or adapter designed for this exact geometry and revision is still required.
• V6 mounts: a similar collar is not sufficient. Compare every dimension, orientation and available clearance.
• Nozzles: use the dedicated TZ-V6 family. A standard V6 nozzle is not automatically compatible merely because it also has an M6 × 1 thread.

Continuous, correctly directed heatsink cooling is essential while printing. A heatsink fan and machine-specific carriage mount are not listed as included parts.

Electrical connection and commissioning

1. Confirm that the machine and hotend output operate at 24 V. The included heater draws approximately 2 A; board, power supply, connector and wiring must support the load with suitable margin.
2. With the machine cold, verify that the sensor reports a plausible room temperature before enabling the heater.
3. Secure the thermistor and heater without pinching or straining their wires. Do not identify a connection solely from wire colour.
4. Enable and verify the firmware thermal-runaway protections.
5. Run PID tuning at a normal working temperature and supervise the first complete heat-up.
6. After assembly, check the hot seal using the procedure for the machine without loading the heatbreak or touching the wires with a tool.

Sensor configuration

Marlin

Marlin uses table 5 for the Semitec 104NT-4 with the usual 4.7 kΩ pull-up:

#define TEMP_SENSOR_0 5

Verify that this matches the actual input and board electronics. After installation, run PID autotuning at a representative temperature—for example M303 E0 S230 C8—and save with M500 only if EEPROM is enabled and the result is stable.

Klipper

Klipper includes the exact sensor curve:

[extruder]
sensor_type: ATC Semitec 104NT-4-R025H42G
sensor_pin: <thermistor input pin for your board>
max_temp: <safe limit, never higher than 300>

After installation, tune it with PID_CALIBRATE HEATER=extruder TARGET=230 and save using SAVE_CONFIG. Replace the example pin and temperature with values appropriate for the machine and material.

RepRapFirmware

Configure it as a 100 kΩ NTC thermistor using the 104NT-4 curve. Sensor number, pin, pull-up resistance and supported parameters depend on the controller and RepRapFirmware version; do not copy a universal line without checking the board documentation.

Temperature and materials

The complete hotend is limited to 300 °C. A higher temperature rating for the nozzle or block metal does not raise the limits of the thermistor, heater, connectors, wiring, cooling or toolhead parts. Firmware must not be configured above the most restrictive component.

It can process common materials such as PLA, PETG, ABS, ASA, TPU, PP, PC or some polyamides when their requirements fall within the machine's capability. Technical polymers such as PEEK or PEI are not considered universally compatible: processing depends on the exact grade and usually requires validation of the complete thermal system, enclosure and extruder.

Compatible replacement parts

• TZ-V6 silicone sock.
• 0.3 mm hardened-steel TZ-V6 nozzle for finer detail.
• 0.4 mm hardened-steel TZ-V6 nozzle as a like-for-like replacement for the included size.
• 0.6 mm hardened-steel TZ-V6 nozzle for wider lines and more margin with filled materials.

Kit contents

• 1 TZ-V6 2.0 hotend with 0.4 mm nozzle.
• 1 24 V, 48 W ceramic heater and 1 104NT-4 thermistor.
• 1 1200 mm heater extension and 1 1200 mm thermistor extension.
• 1 silicone sock.
• 4 M2.5 × 5 socket screws and 2 set screws.
• 1 4 mm open-ended spanner and 1 1.5 mm hex key.
• 1 container of thermal paste.

This is for you if

• You need a compact 24 V hotend with more flow headroom than a basic V6.
• Your carriage or toolhead has a mount validated for the TZ-V6 2.0.
• You want a replaceable hardened nozzle for potentially abrasive materials.
• You can correctly configure the sensor, PID, cooling and thermal limits.

This is not for you if

• Your printer is strictly 12 V and you will not replace the heater supply.
• You need a direct MK8 or standard V6 replacement without changing the mount, ducts or wiring.
• You want to reuse standard V6 nozzles without checking the short TZ-V6 geometry and sealing seat.
• You need to exceed 300 °C or process a technical polymer without validating the rest of the machine.