Ender 3 Pro X Linear Rail and Sherpa Mini Mount

🧰 Description

I've converted my Ender 3 Pro X-axis to a linear rail setup without losing any print area by removing the 2020 profile. This project combines and remixes several different models to achieve a clean, compact design.

• At the bottom of this page, you’ll find the parts list and photos showing where each component is used.
• You can reuse the original X-axis belt — no replacement needed.
  This setup is also compatible with KevinAkaSam’s Belted Z mod.

🔩 Linear Rail Holder (Remix)

On the left rail holder, I trimmed a small section to create space for the X-axis limit switch. 

The tensioner is divided into separate parts for easier printing. 

The right rail holder remains unchanged from the original model.

• 👉 Original model: Thingiverse #5169306

🧱 Linear Rail Car – X Plate Mount

You’ll need to drill four M3 holes in the X plate to attach the linear rail carriage. Use this drill guide for accurate alignment:

• 👉 Thingiverse #3031918

⚙ BLTouch Mount (Remix)

Since the linear rail carriage adds four new screws on the X plate, the BLTouch mount requires a slight remix for proper fitment.

• 👉 Original model: Thingiverse #3003725

🧵 Sherpa Mini Mount (Remix)

I’ve remixed the Sherpa Mini mount to add a hole for the cable chain mount and enlarge the plate mounting holes to fit M4 screws directly.

• 👉 Original model: Thingiverse #4687028

🔗 X Chain Top Mount

This part works perfectly without modification.Download it here:

• 👉 Thingiverse #4500068

🪛 Parts List

• 1x 300mm linear rail with MGN12H carriage
• 4x M3×5 button head screws – mount X plate to rail carriage
• 2x M3×10 button head screws – mount BLTouch
• 6x M3 nuts – for left & right rail holders
• 3x M4 nuts – for left & right rail holders
• 2x M3×12 button head screws – replace original 2020 profile mount screws. Original screws are M3×16 (2 on left, 1 on right).On the left, one can be reused; the other must be shorter. You can cut the old one with a Dremel if needed.
• 6x M3×12 hex screws – mount rail to left/right holders
• 1x M6x? (button head) screw – replace the right-side eccentric nut screw (original hex head doesn’t fit)
• 1x M4×30 button head screw + 1x M4 nut – mount belt tensioner

💨 Additional Info: Fan Duct

I’m using the Mini-Me Fan Duct Cooler, available in fixed and height-adjustable versions.
It’s lightweight, and the adjustable version is compatible with Volcano-style hotends.

• 👉 Thingiverse #5141104