Voron Switchwire Build Guide — Complete Step by Step

Switchwire 搭建指南 新手

The Voron Switchwire is unique in the Voron family: it's the only bedslinger design. While the V2.4 and Trident move the toolhead in both X and Y while the bed moves only in Z, the Switchwire moves the bed in Y and the toolhead in X — just like an Ender 3 or Prusa i3. This makes it the most approachable Voron build for newcomers, the most affordable, and the best option if you already own an Ender 3 and want to convert it.最后更新：2025年5月。

本指南涵盖完整的 Switchwire 搭建流程：理解床式移动架构、框架组装、线性导轨改装（最具影响力的升级）、布线与电子元件、针对床式移动运动学的 Klipper 配置、打印质量调优以及外壳考量。无论您是从 Formbot 套件搭建、改装 Ender 3，还是自行采购零件，这里都能找到所需的一切。

理解 Switchwire 设计

Switchwire 与其他所有 Voron 机型有本质区别。在开始搭建前，请理解其独特之处：

• Bedslinger运动结构： The bed moves forward and backward (Y axis) while the toolhead moves left and right (X axis). Z movement is accomplished by raising the gantry. This is the same kinematics as an Ender 3, CR-10, or Prusa MK3.
• 单Z轴电机： Unlike the V2.4's 4 Z motors or the Trident's 3, the Switchwire uses a single Z motor driving a leadscrew. Simpler, cheaper, but requires careful Z alignment.
• 固定龙门架： The X gantry is fixed in position and only moves up and down (Z). The bed moves under it. This means the frame is simpler (no moving gantry weight), but print speed on the Y axis is limited by the moving bed mass.
• 300mm打印体积： Standard Switchwire is a 300x300x300mm cube, though you can build smaller or larger. The 300mm size is the sweet spot — big enough for useful parts, small enough to keep the bedslinger motion manageable.

Switchwire vs V2.4 vs Trident — 关键差异

如果您正在决定搭建哪款 Voron，以下是实际差异：

• 速度： The V2.4 and Trident can reach 300-500mm/s with 20k+ acceleration due to their lighter moving mass (toolhead only). The Switchwire is limited to 80-150mm/s with 3k-5k acceleration because the heavy bed moves in Y.
• 成本： A Switchwire kit costs $250-$400 vs $600-$900 for a Trident and $800-$1200 for a V2.4. If budget is your primary concern, the Switchwire is the clear winner.
• 打印质量： All three can produce excellent prints. The Switchwire's bedslinger kinematics mean Y-axis ringing is more difficult to eliminate (heavier moving mass), but with proper input shaper tuning, the difference is minimal for functional parts.
• 复杂度： The Switchwire has roughly half the parts count of a V2.4. No Z belts, no gantry leveling system, no chamber thermistor, no exhaust fan. Build time is 15-25 hours vs 40-60 hours for a V2.4.
• 外壳： The Switchwire is harder to enclose because the bed moves forward — you need a flexible door or a sliding panel. The V2.4 and Trident are naturally enclosed (fixed bed, moving gantry).

Ender 3 改装 vs Full Kit

Switchwire 的设计初衷就是便于改装。最初的 V1.0 版本实际上被称为“Ender Switchwire”——专为 Creality Ender 3 打印机设计的即插式改装方案。以下是您需要了解的内容：

Ender 3 Conversion

如果您已拥有 Ender 3（或 Ender 3 Pro、V2、Neo），您可以使用打印件和硬件套件将其改装为 Switchwire。可重复使用的部件包括：

• 2040 铝型材框架（但需将立柱切割至 400mm）
• 热床（若平整——标准 Ender 3 热床可用，但铸铝工具板更佳）
• 步进电机（若为 NEMA 17 且扭矩足够——原装 Ender 3 电机可用）
• 电源（Ender 3 的 Meanwell LRS-350-24 足够）

您需要购买：Voron 打印件套件（或使用其他打印机自行打印）、线性导轨（X 和 Z 轴用 MGN9，Y 轴用 MGN12）、SKR Mini E3 V3 或兼容控制板、Voron 规格热端（Revo Voron 或 Dragon UHF），以及 Switchwire 专用硬件套件（螺丝、垫柱、滑轮、皮带、Z 轴丝杆）。

完整套件搭建

如果您从零开始，Formbot 或 LDO 的 Switchwire 套件包含所有部件：框架型材（预切割并攻丝）、打印件、线性导轨、运动组件、电子元件（控制板、步进驱动器、电源）、热端及所有硬件。Formbot 套件约 $300，从中国发货。LDO 套件约 $400，采用更高质量的组件（LDO 电机、正品 Gates 皮带、F695 轴承）。对于首次搭建者，LDO 套件值得多花这笔钱——附带的说明书和组件质量能显著减少调试时间。

线性导轨改装 — X、Y 和 Z 轴

Switchwire 最具影响力的升级是将原装 Ender 3 的 V 型槽轮替换为线性导轨。Switchwire 设计中使用导轨的原因如下：

• X轴（MGN9H — 300mm）： The toolhead carriage rides on a single MGN9 rail. The H (heavy) carriage is recommended for the extra rigidity with the Stealthburner toolhead. Mount the rail with the flat side against the extrusion and the carriage facing forward.
• Y轴（MGN12H — 350mm）： The bed rides on two MGN12 rails (or one MGN12 + linear rod depending on your kit). The 12mm rail is wider than the 9mm, providing better load distribution for the heavy bed. Tension the bed mounting screws evenly — 2-3Nm max — to avoid binding.
• Z轴（MGN9H — 250mm）： The X gantry rides on two MGN9 rails (left and right uprights). These must be perfectly parallel to each other and perfectly perpendicular to the base. Any misalignment here will cause Z binding and inconsistent first layers.

导轨预处理： New linear rails come packed in a rust-preventative grease that is NOT suitable for 3D printing use. Before installation, flush the rails with isopropyl alcohol (90%+) or a degreaser, then apply a thin coat of Mobilux EP 2 or Super Lube EP2 grease. Work the carriage back and forth until the grease is distributed evenly and the carriage moves smoothly end-to-end. A properly prepared rail should move with consistent resistance across its entire travel — no tight spots.

龙门架校准（关键）： After mounting both Z rails, install the X gantry and check that it moves up and down freely. If it binds at any point, loosen the Z rail mounting screws, run the gantry to the binding spot, tighten while the gantry is at that spot, and recheck. Repeat until the gantry moves smoothly through the full 300mm Z range with the motor disconnected.

布线与电子元件

Switchwire 的电子元件比其他 Voron 机型更简单，因为没有腔体电子元件仓。所有部件安装在框架左侧：

• 控制板： The SKR Mini E3 V3 is the most popular choice — it's cheap ($35), widely available, and has the right number of stepper drivers (4 — X, Y, Z, extruder). The BTT Manta M4P or M8P are also excellent options with more expandability.
• 步进驱动： TMC2209 or TMC2226 in UART mode for silent, reliable operation. Set the run_current to 0.8A for the X/Y/Z motors and 1.0A for the extruder. The stock Ender 3 motors (0.8-1.0A rated) work fine at these currents.
• 热端接线： The Stealthburner toolhead uses a standard 14-pin harness. For the Switchwire, you'll need 4 wires for the hotend heater (2) and thermistor (2), 4 wires for the extruder motor, 2 wires for the part cooling fan, and 2 wires for the hotend fan. CAN bus is optional but clean.
• 热床接线： The bed heater (standard 300x300mm silicon heater, ~300W) and the 100k NTC thermistor. Use 14AWG or 12AWG silicone wire for the heater. The bed moves in Y, so the wires must be routed through a cable chain or a flexible trough.
• 限位开关： Mechanical microswitches for X, Y, and Z. The Switchwire does NOT use Z probe for homing — you home X and Y to the endstops, and Z to the switch on the toolhead. This is critical for the Klipper configuration.

床式移动运动学 Klipper 配置

Switchwire 的 Klipper 配置与其他 Voron 不同。以下是关键细节：

# In printer.cfg — Switchwire-specific settings

[stepper_x]
step_pin: PB13
dir_pin: !PB12
enable_pin: !PB14
microsteps: 16
rotation_distance: 40
endstop_pin: ^PC0  # X min endstop
position_endstop: 0
position_max: 300
homing_speed: 50
homing_retract_dist: 5

[stepper_y]
step_pin: PB10
dir_pin: !PB2
enable_pin: !PB11
microsteps: 16
rotation_distance: 40
endstop_pin: ^PC1  # Y min endstop
position_endstop: 0
position_max: 300
homing_speed: 50
homing_retract_dist: 5

[stepper_z]
step_pin: PB0
dir_pin: PC5
enable_pin: !PB1
microsteps: 16
rotation_distance: 8
endstop_pin: probe:z_virtual_endstop
position_min: -0.5
position_max: 300
homing_speed: 15

[bed_screws]
screw1: 30,30
screw2: 270,30
screw3: 270,270
screw4: 30,270
    

Key Switchwire-specific Klipper notes:

• Z虚拟限位： The Switchwire uses the Z probe (usually an inductive probe on the toolhead) as the Z endstop. Configure[probe] section withz_virtual_endstop in[stepper_z]. This ensures the Z height is always relative to the probe trigger point, not a physical switch.
• 热床螺丝： Use thePROBE_CALIBRATE command to set Z offset, then useBED_SCREWS_ADJUST orSCREWS_TILT_CALCULATE to level the bed. The Switchwire bed leveling is identical to an Ender 3 — manual screws, paper test, repeat.
• 压力提前： Start withpressure_advance: 0.04 for direct drive and0.5 for Bowden. The Switchwire's moving bed makes PA even more important — the Y axis ringing from the heavy bed amplifies corner bulging. See ourPressure Advance Guide for tuning.
• 输入整形： The Switchwire needs different shapers for X and Y. X axis (toolhead only, light) benefits from MZV or EI. Y axis (heavy bed) benefits from ZV or 2HUMP EI. The heavy Y mass means input shaper works wonderfully — Y ringing is sharp and easy to cancel.

打印质量预期与调优

Switchwire 能打印出优秀的作品——在功能部件方面与其他任何 Voron 机型不相上下。以下是预期效果：

• X轴质量： Excellent, comparable to V2.4. The light toolhead (350-400g with Stealthburner) allows 5k-8k acceleration on X. Ghosting on X is minimal with input shaper.
• Y轴质量： Good, but you'll see more ringing on Y than X due to the 800-1000g moving bed mass. Expect to run Y acceleration at 3k-5k vs 8k on X. Input shaper helps dramatically — 2HUMP EI can cancel Y ringing at higher accelerations.
• 第一层： The Switchwire produces some of the best first layers of any Voron because the single Z leadscrew is simple and reliable. Once trammed correctly, the bed stays level for weeks.
• 悬垂与桥接： Identical to other Vorons with the same toolhead. With a Stealthburner and 5015 part cooling fan, overhangs up to 65 degrees are clean at 60mm/s.
• 最高推荐速度： 100-120mm/s for quality functional parts, 150mm/s for draft prints. Y axis is the bottleneck — pushing over 150mm/s on Y causes the bed mass to induce ringing that even input shaper can't fully cancel.

外壳选项

给bedslinger加外壳比给CoreXY加外壳更难，但可行：

• 柔性门： The most common approach. Build a 3-sided enclosure with a flexible PVC curtain or a folding accordion door on the front. The door opens out of the way while printing and closes when the bed retracts. This maintains chamber temperature at 40-50C — enough for ABS but not enough for polycarbonate.
• 滑动面板： A rigid front panel on drawer slides. The bed slides forward and the panel slides sideways. More complex but looks cleaner. Requires precise alignment so the panel doesn't bind.
• 无外壳： The Switchwire runs ABS perfectly fine without an enclosure if you use a brim and print in a room without drafts. The heated bed (100-110C) creates a local warm zone. For occasional ABS printing, skip the enclosure entirely.
• 腔室温度： Even with a good enclosure, the Switchwire chamber stays at 40-45C max because the bed moves and can't be fully sealed. If you need high-temp materials (PC, PEEK, PEI), the Switchwire is not the right machine — choose a Trident or V2.4 instead.

对大多数用户，我们建议用5mm透明亚克力或聚碳酸酯板搭建三面外壳，正面用柔性PVC帘。总成本：$50-80。这足以满足ABS、ASA及所有常见工程耗材的打印需求。