BMG + V6 + ABL Direct Drive Extruder

Last updated: July 31, 2021 (see Change log section near the bottom of this post)

A compact and easy to print direct drive mount for BMG extruders, V6 hotends, and ABL setups. This is compatible with open carriage printers such as an Ender 3 (Pro), Tevo Tornado, Alfawise U20, etc.

This excellent design is originally made by Adolf_Muffin , but I made a couple of improvements:

- M3 nut mounting holes and screws.

- Better BLTouch mount - the original was fragile and it would hit the tension belt adjuster at max X.

- Better cable route on Carriage Mount - moved the original cable route from the right to the left.

- List of screws and nuts needed.

- NEW: MGN12 Linear Rail compatible ²

- Guides for Slicing, Assembly, Firmware Config, and Calibration. — — — — — — — — — — — — — — — — — — — — — — — — — —

### Check out the remixes for different machines:

- Tronxy X5S by SoDakDave

- Ender 3 V2 by db9mat ¹

- CR-10 V2/V3 by IssaP ### For 18mm EZABL / Capacitive Probes

- Check out CephDigital's remix!

His post includes probe offsets and other important details! — — — — — — — — — — — — — — — — — — — — — — — — — —

### Quick note about the components:

• This mount should be compatible with GENUINE or CLONE components.

• As of July 20, 2020, the carriage mount and BLTouch mount does not fully support the Ender 5. The current models can work, but you're going to have to do some post processing. New models coming soon.

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¹ Requires additional hardware: 4x M3x5 heated brass inserts

² Requires additional hardware: 4x M3 screws

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🔪 Slicing the parts

I'm using PrusaSlicer, but any slicer will do!

*Make sure to download the CORRECT AND MOST LATEST files, so the first two downloads! RH indicates the "standard" BMG's, and LH indicates the "mirrored" BMG's! Don't know which one you have? Click here to go to the BMG's store page.

- Print the Fan Ducts, Motor Mount, and Carriage Mount in PETG or ABS ! Everything else can be printed with PLA. *For the MGN12 Carriage Plate, refer to the original creator's settings: https://youtu.be/rN0T-T9uDG8?t=152

- I recommend 0.2 mm layer height, and around 2 mm perimeters/walls for the Motor Mount and Carriage Mount.

- Use any strong infill type you want, like Rectilinear/Grid/Gyroid.

- Scroll down to find an image of recommended print orientations. To enlarge this image, right-click it and view it in a new tab.

Recommended print orientations.

🔩 Hardware Required

You will need the following hardware:

*1x BMG extruder ¹ *1x V6 Hotend (assembled) *1x Pancake Motor *2x 5015 blower fans wired in parallel ² *1x BLTouch sensor *13x M3 nuts *4x M3 x 6 mm BUTTON head *2x M3 x 8 mm any *4x M3 x 10 mm any ³ *1x M3 x 10 mm BUTTON head ³ *1x M3 x 12 mm any *4x M3 x 20 mm any

- If you're using a 4020 axial fan for cooling the hotend, use 4x M3 x 25 mm screws.

- If you're using a 4010 axial fan for cooling the hotend, use 4x M3 x 15 mm screws. ¹ Your BMG should've came with 3x M3x35 screws already.

² Click here how to wire 5015's in parallel. This applies to Ender 3's, but may apply to other printers.

³ If you have an Ender 3 (Pro), you can use your old extruder M3 x 10 mm button head screws. May apply to other similar printers.

🧱 Assembly

Click this Imgur link to access the assembly guide: https://imgur.com/a/UwM568h

For MGN12 linear rail users