🛠️ Heavily Modified Ender 3 Pro Setup

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🔧 Hardware Modifications

My Ender 3 Pro includes the following upgrades:

• 🧠 Mainboard: BTT SKR Mini E3 V2
• 🍓 Controller: Raspberry Pi
• ➖ X Axis: Linear Rail
• ➖ Y Axis: Linear Rods
• 📐 Sensor: ADXL345
• 📍 Auto Bed Leveling: 3DTouch
• 🔥 Hotend: Bambu-style
• 🌬️ Part Cooling Fan: 5015
• 🌡️ Hotend Cooling Fan: 4020

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📂 Repository Contents

• 🧾 Klipper Configuration (SKR Mini E3 V2 + 3DTouch + ADXL345)
• 🖨️ Printed Upgrade Links
• 🧪 Tuning Print Models
• ⚙️ Cura & PrusaSlicer Start/End G-code Templates

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🖨️ Example Prints

• 🧵 PETG Sample:
  

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🔌 Raspberry Pi

• Klipper Installation Kiauh

• TTY Rule (Persistent Device Name)

To make your serial devices persist across reboots, copy this file:

📄 49-custom.rules
➡️ Place into: /etc/udev/rules.d/

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🧱 Printed Upgrade Links

➖ Y-Axis Linear Rods

• Linear Rod/Shaft Upgrade
• Y Rod Holder + Tensioner

⚙️ Belted Z-Axis

• Belted Z Conversion

🏗️ Z-Brace for Belted Z

• Strong Top + Z-Brace
• Thingiverse Z-Brace #2 (Use bottom_left and bottom_right)

➖ X-Axis Linear Rail

• X Linear Rail + Sherpa Mini Mount

💨 Fan Duct Options

• Mini Me Remix (Height Adjustable) (Bambu hotend)
• Mini Me V4 Duct (Stock hotend)
• Volcano Nozzle Duct

📍 BLTouch Mounts

• BLTouch Mount
• BLTouch Spacers (2mm / 5mm / 10mm)

🧵 Sherpa Mini Extruder

Print the parts out of ASA, ABS, or PETG.

• Sherpa Mini STLs

🔩 X-Belt Tensioners

Note: Only for standard Ender 3 Pro (not compatible with linear rail X-axis).

• Tensioner A
• Tensioner B

Correct Files to Use:

• Ender_3_Pro_Tevo_Tornado_2mm_lower_body
• ender_3_pro_tevo_tornado_x_tensioner_knob_misterguru
• tensioner_slider_solid_screwheadclearance

🛏️ Bed Lock

• Bed Lock Model

🔇 Anti-Vibration Feet

• Vibration-Dampening Feet

Files to Use:

• foot-tpu
• foot-extension

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🛒 Aliexpress Upgrade Links

• 🧲 PEI Bed
• 🔥 Hotend Upgrade – Bambu Style
• 🌀 Nema14 Motor for Sherpa Mini
• ⚙️ Sherpa Mini Gears & Bearings
• 🔩 Bimetal Hotend for Stock Extruder

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🔧 Calibration Tools

🧪 Linear Advance Calibration

• Ellis3DP Pressure Advance Tool

📏 Dimensional Accuracy

• CaliCross

🔁 Retraction Test

• Full Retraction Test Model
  Tip: Run tests with varied distances. Enable "Minimum travel distance for retraction".

  

📦 Flow Calibration

• Flow Cube Model
• Slic3r Flow Math Docs

💡 Pro Tip:
Print multiple mini parts to assess surface quality. For cubes, use fixed wall thickness over slicer auto-calculated settings.

🔍 Slicer Differences:

• Cura: Rectangular cross-sections
• PrusaSlicer / Slic3r: Hemispherical logic for single-wall thickness

🧠 Community Flow Math Deep Dive