7. Nozzle
Extruder and hotend
Every Revon has the same toolhead set:
- LDO Orbiter 2.5 extruder – a light geared direct-drive extruder for 1.75 mm filament. It grips and retracts precisely, including flexible filament (TPU). Leave the factory settings (
rotation_distance4.637) unchanged. - DropEffect neXtG UHF hotend (in the slicer: Standard) – an extended melt zone for fast printing, ceramic heater, 104NT thermistor. V6-system nozzles, changed with a 7 mm wrench. Maximum operating temperature: 300 °C.
How much plastic per second each nozzle passes (the limit for EXTRUDE on the screen and in the Panel):
| Nozzle | Max. flow |
|---|---|
| 0.4 mm | 25 mm³/s |
| 0.6 mm | 35 mm³/s |
| 0.8 / 1.0 / 1.2 mm | 45 mm³/s |
Which nozzle for what
| Nozzle | Use |
|---|---|
| Brass | PLA, PETG, ABS, ASA, TPU without additives. Best heat conduction, wears fastest. |
| Hardened steel | Fibre-filled materials: CF (carbon), GF (glass), glow-in-the-dark, metal-filled. |
| Tungsten | Abrasive materials at high volumes; durable and conducts heat well. |
Diameter: 0.4 for most parts, 0.6–0.8 for large, strong parts and fast printing, 0.25 for fine detail. Print fibre-filled materials with at least 0.4, preferably 0.6.
Set the installed nozzle
Bottom menu Nozzle → INSTALLED NOZZLE: diameter and material → Save. Before every print the machine compares it with the nozzle stored in the file and asks if they differ.
Nozzle change
Replace nozzle (in the nozzle window) or Menu → More → Nozzle change starts a guided change in 6 steps: choose the new nozzle, unload filament, heat to 250°C, unscrew the old one, screw in the new one and save. The nozzle is changed hot, with gloves, using a 7 mm wrench. The nozzle wear counter resets after Revotech approves it. If you are not experienced with this, call service.
15. Maintenance and counters
| Maintenance | Every | What to do |
|---|---|---|
| Nozzle | 200 h | Wear, leaks, hot tightening. Replace if the orifice is worn out. |
| Belt, belts and axes | 500 h | Belt tension, rails, axis play; clean and lubricate the rails. On the Belt also the conveyor belt and its guidance. |
| Full service | 1000 h | Electronics, cables, fans, heating, calibration – preferably with Revotech service. |
The machine counts hours and reminds you about maintenance on the screen (SERVICE DUE), in Revo Panel and (with consent) by e-mail. When done, tap DONE in Menu → More → Maintenance. Parts have their own counters too: nozzle, extruder, belts, bearings, CAN board – after a replacement the counter resets once Revotech approves it.