Voron Stealthburner 工具头 — Complete Build and Setup Guide

工具头 Stealthburner 搭建升级

The Stealthburner is the latest official Voron toolhead, designed to replace the Afterburner. Released in late 2022 after extensive community beta testing, it improves cooling, reduces weight, simplifies filament loading, and adds support for modern hotends and toolhead PCBs. If you're building a new Voron or upgrading from an Afterburner, this guide walks you through the complete assembly, wiring, and Klipper configuration process.最后更新：2025 年 5 月。

Stealthburner 并非单一部件——它是一个模块化系统。挤出机 (Clockwork 2)、风道 (标准版或 LED 版)、热端滑块和探针支架都是独立的子组件，通过螺栓连接在一起。理解它们如何相互作用是完成整洁搭建的关键。

什么是 Stealthburner？

Stealthburner 是 Voron Design 的第三代工具头。与最初的 Afterburner (2019) 和 Mini Afterburner (V0) 相比，Stealthburner 提供：

改进的部件冷却： Dual 4010 blower fans in a self-contained duct, delivering directed airflow from both sides of the nozzle. The standard fan duct achieves ~40% more airflow than the Afterburner's single blower.
Clockwork 2 挤出机： Replaces the Clockwork 1. The CW2 uses a single BOM-gear (bonded drive gear) on the motor shaft and a matching idler bearing, eliminating the gear train of the CW1. This reduces complexity and improves extrusion consistency.
热端兼容性： Interchangeable hotend carriages for Dragon (standard), Revo Voron, Rapido UHF/HF, and Phaetus BMS. No more printing adapter brackets.
集成探针安装： Built-in mounts for Klicky, Voron Tap, and Euclid probe systems, with wiring channels in the body.
CANBus 就绪设计： Internal routing channels for toolhead PCB cables (SB2040, EBB36, EBB42) with strain relief points.
更轻的重量： Approximately 280g fully assembled with a Dragon hotend and standard fans, vs ~320g for the Afterburner with equivalent hardware. Lighter means less ringing at high accelerations.

零件清单

开始前，请备齐所有组件。Stealthburner 需要 3D 打印件 (PETG 或 ABS)、五金件和电子元件。你可以从自己的打印机或中国直供供应商处获取打印件。

打印件

Stealthburner 主体（主外壳，左右两半）
Clockwork 2 挤出机主体和张力臂
风扇风道（选择标准版、LED 版或触摸屏版）
热端托架（匹配你的热端类型）
探头支架（根据你的设置选择 Klicky 或 Euclid）
工具头 PCB 安装座（如果使用 SB2040 或类似型号）

五金套件

M3x8、M3x12、M3x16、M3x20 BHCS 螺丝
M3x8 FHCS 螺丝（用于热端托架）
M3 热熔嵌件（类型取决于塑料——PETG 用黄铜滚花嵌件，ABS 用黄铜螺纹嵌件）
M3 垫圈和 M3n 螺母
2x 4010 轴流风扇（热端冷却）——24V，0.1-0.15A
2x 4010 吹风扇（部件冷却）——24V，0.15-0.25A
NEMA14 步进电机（用于 CW2 挤出机）——LDO 36STH20-1004AHG 或同等型号
BMG 齿轮套件——一个驱动齿轮 + 一个惰轮轴承 + 轴 + 卡簧
热端（Dragon Standard、Revo Voron、Rapido 等）
加热棒（标准 24V 50W 或 60W 陶瓷）
热敏电阻（NTC 100K 3950 或 PT1000，根据需求选择）

电子元件

工具头PCB：SB2040 v1.0或v1.1（推荐）、EBB36或EBB42
预压接JST-XH和JST-SH线束或定制切割导线
若通过CAN使用SB2040，需配备CANBus收发器
若使用PT1000热敏电阻，需配备PT100放大器板

组装顺序

按此顺序搭建——每个子组件依次连接，打乱顺序意味着需要拆解已完成的工作。

步骤 1：安装热压螺母

所有打印件都有指定的 M3 热压螺母孔。使用烙铁在 230-260°C (PETG) 或 280-300°C (ABS) 下操作。垂直压入每个螺母，就位后保持压力 3-5 秒。切勿倾斜——歪斜的螺母会在拧螺丝时滑丝。在所有其他组装步骤前安装所有螺母。

步骤 2：Clockwork 2 挤出机

CW2 是一种直接驱动挤出机，其单个驱动齿轮压装在 NEMA14 电机轴上，张紧臂上有一个惰轮轴承。耗材被夹在驱动齿轮和轴承之间。

将驱动齿轮压入电机轴。齿轮必须与D型轴末端齐平——以轴上的平面为基准。若齿轮过高，耗材会卡在轴的光滑部分；过低则会撞击主体。
将电机插入CW2主体。电机螺丝穿过主体固定至电机端面——使用M3x12 BHCS螺丝。
在张紧臂上安装惰轮轴承。轴承通过M3x12螺丝和垫圈固定。请勿过度拧紧——轴承必须能自由旋转。
将张紧臂组装到铰链销上。弹簧将张紧臂推向耗材通道。通过旋转CW2主体背面的M3手拧螺丝调节张力。
耗材路径检查： Insert a piece of filament into the CW2 from the top. It should drop straight through the drive gear/idler gap and exit the bottom of the extruder body cleanly. If it catches on a printed edge, sand the inside of the filament path with 400-grit paper.

CW2 齿轮减速说明： Unlike the CW1 which used a 7:1 planetary gear reduction, the CW2 is direct-drive — the motor shaft is also the drive gear shaft. This means one motor revolution = one gear revolution. The BMG-style gear pair (drive gear + idler bearing) provides the effective gear ratio through the difference in gear diameters, giving approximately 3:1 mechanical advantage. This is more than sufficient for 1.75mm filament extrusion and reduces the total gear train friction significantly.

步骤 3：热端滑块与安装

热端托架是一个打印块，用于安装散热器、隔热管、散热片和喷嘴。每种热端类型都有不同的托架。

从顶部将散热片滑入滑架。散热片应紧密贴合——若松动，添加一层Kapton胶带薄垫片；若过紧，轻微打磨滑架槽。
将喉管安装到散热片中。对于Dragon Standard热端，喉管采用压入式安装。安装前在喉管螺纹处涂抹导热膏（氮化硼或同类产品）。
将散热块安装到喉管底部。喷嘴从下方旋入喉管。
关键尺寸——喷嘴伸出长度： The nozzle tip must extend exactly1.5mm ± 0.1mm below the bottom face of the hotend carriage. This ensures the nozzle clears the fan duct and aligns correctly with the part cooling airflow. Use a digital caliper to measure. If the protrusion is wrong, adjust by adding or removing the copper washer between the heat break and the heat sink.
使用M3x8 FHCS螺丝从前方将热端滑架固定到Stealthburner主体。滑架滑入主体的燕尾槽中。

步骤 4：风扇与风道

Stealthburner 使用两个独立的风扇系统：一个热端风扇（轴流式）用于冷却散热器鳍片，以及两个部件冷却风扇（涡轮式）用于向打印件吹风。

热端风扇： Mount the 4010 axial fan on the left side of the Stealthburner body (looking from the front). Airflow direction is into the body, across the heat sink, and out the rear. The fan label (usually an arrow) should point toward the heat sink. Secure with M3x16 screws through the body into the fan.
部件冷却风扇： Mount each 4010 blower fan into the fan duct housings. The blowers sit vertically, with the outlet aligned to the duct channel. Secure with M3x12 screws. The two blower fans are wired in parallel — both positive wires to the part cooling fan output, both negative wires to ground.
风扇风道选择： Three options exist — standard (no frills), LED (includes 2x WS2812 LEDs for lighting the print area), and touchscreen (larger body with capacitive touch button). The standard duct is lightest at ~8g. The LED duct adds ~3g but is worth it for print monitoring.

步骤 5：探针支架

Stealthburner 支持多种探针系统：

Klicky： A probe mount is printed that slides into the left side of the Stealthburner body. The Klicky probe uses microswitches to detect the bed surface. It's cheap (~$3 in parts) and reliable. The mount includes a dock station that attaches to the bed frame.
Voron Tap： Tap uses the entire toolhead as a probe — the nozzle itself triggers a microswitch when pressed against the bed. Mount Tap between the Stealthburner body and the X carriage plate. Compatible but requires removing the Klicky mount if switching.
Euclid： Docks on the gantry and attaches to a mount on the Stealthburner left side. Similar to Klicky but uses a magnetic coupling instead of servo actuation. Heavier but more durable.

接线 — SB2040 与 CANBus

SB2040 是 Voron 推荐的工具头板。它安装在 Stealthburner 外壳内部，将所有工具头组件通过单根 CANBus 或串行电缆连接到主板。这消除了 Afterburner 所需的沉重电缆束。

SB2040 接线图

SB2040 Connector Pinout:
- MOT0 (Extruder): 4-pin JST-XH — A+/A-/B+/B- to NEMA14
- H0 (Heater): 2-pin JST-XH — heater cartridge (+/-)
- TH0 (Thermistor): 2-pin JST-XH — NTC 100K thermistor
- FAN0 (Hotend fan): 2-pin JST-SH — 4010 axial fan
- FAN1/FAN2 (Part cooling): 2x 2-pin JST-SH — blower fans (parallel)
- PROBE: 3-pin JST-SH — signal, GND, VCC (for Klicky or Euclid)
- RGB: 3-pin JST-SH — 5V, GND, data (for LED fan duct)

CANBus 与 USB 与串口： The SB2040 connects to the mainboard via a single 4-pin JST-GH cable for CANBus. This carries both power (24V) and data over the CAN protocol. Alternatively, connect via USB-C (direct to the SBC) or UART serial (to the mainboard). CANBus is the cleanest option — one slim cable replaces 8-12 individual wires. The trade-off is that CANBus requires a transceiver on the mainboard side (USB-to-CAN adapter or integrated CAN on the mainboard).

接线顺序：

将SB2040安装在其打印支架上，置于Stealthburner主体内部
用M3x8螺丝拧紧工具头PCB支架
将挤出机电机导线连接至MOT0——导线颜色需与电机数据表匹配
将加热棒连接至H0——电阻加热器无极性要求
将热敏电阻连接至TH0——NTC热敏电阻无极性要求
将热端风扇连接至FAN0，部件冷却风扇连接至FAN1和FAN2
将所有导线穿过Stealthburner主体的应力释放通道
用附带的夹子固定CANBus电缆，防止连接器受力

Stealthburner 的 Klipper 配置

硬件组装完成后，需要为 Stealthburner 特定组件配置 Klipper 配置文件。

挤出机 (CW2)

[extruder]
step_pin: SB2040: MOT0_STEP
dir_pin: SB2040: MOT0_DIR
enable_pin: !SB2040: MOT0_EN
rotation_distance: 7.53  # BMG gear set value
microsteps: 16
full_steps_per_rotation: 200  # Standard NEMA17
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: SB2040: H0
sensor_type: Generic 3950
sensor_pin: SB2040: TH0
control: pid
pid_Kp: 21.527
pid_Ki: 1.063
pid_Kd: 108.987
min_temp: 0
max_temp: 300
pressure_advance: 0.040  # Start value, calibrate per filament

CW2 的旋转距离： The standard value for a BMG gear set isrotation_distance: 7.53. This corresponds to the effective circumference of the drive gear. If you're using an aftermarket gear set, calibrate this value by extruding 100mm of filament and measuring actual extrusion — adjust proportionally.

风扇配置

[heater_fan hotend_fan]
pin: SB2040: FAN0
heater: extruder
heater_temp: 50.0
max_power: 1.0

[fan_generic part_cooling_fan]
pin: SB2040: FAN1
max_power: 1.0
shutdown_speed: 0.0

Note: If using two separate part cooling fan ports on the SB2040, wire both fans to FAN1 (use a Y-splitter cable). FAN2 can be repurposed for chamber exhaust or an additional hotend fan if needed.

探针配置 (以 Klicky 为例)

[probe]
pin: ^SB2040: PROBE
x_offset: 0.0
y_offset: 20.0  # Adjust based on probe mount position
z_offset: 0.0
speed: 10.0
samples: 3
samples_result: median
sample_retract_dist: 5.0

散热性能与重量对比

How does the Stealthburner stack up against other toolheads?

Toolhead	重量（克）	部件冷却	挤出机类型	最大加速度（V2.4 300mm）
Afterburner（CW1）	~320	单个4010鼓风机	蜗杆齿轮（7:1）	6,000-8,000
Stealthburner（CW2）	~280	双4010鼓风机	直接驱动（齿轮对）	8,000-10,000
Dragon Burner（Huvud）	~240	单个5015鼓风机	直接驱动（齿轮对）	10,000-12,000

Stealthburner 为大多数 Voron 用户提供了最佳平衡。Dragon Burner 更轻（更适合 V2.4 高速打印），但缺乏 Stealthburner 提供的集成探针安装和 CANBus 布线功能。Afterburner 更笨重，并使用过时的蜗轮挤出机，会导致回差。对于 95% 的 Voron 构建，配备 CW2 的 Stealthburner 是正确的选择。

首次打印前的最终检查

确认喷嘴伸出量为1.5mm——使用卡尺测量
手动旋转挤出机齿轮——应能自由旋转，无卡滞
通过Klipper开启热端风扇——验证气流方向（朝向散热片）
测试部件冷却风扇——两个鼓风机应自由旋转且无刮擦声
将热端加热至200°C并挤出50mm耗材——验证挤出一致性
Run PID_CALIBRATE HEATER=extruder TARGET=240 — the Stealthburner's airflow changes thermal behavior, and the default PID values may need tuning
打印首层测试以验证新工具头重量分布下的Z轴偏移

构建 Stealthburner 是一项令人满意的升级，可提高打印质量和可靠性。请花时间仔细安装 CW2 齿轮并测量喷嘴伸出长度——这两个细节是导致构建后问题最多的原因。一旦调试完成，Stealthburner 可运行数千小时而只需极少维护。