Last updated: July 20, 2020 (more info below)
A simple, lightweight, compact, and easy to print direct drive mount for Bondtech BMG, E3D V6/Volcano, and ABL setups. This mount is compatible with open carriage printers such as an Ender 3, Tevo Tornado, Alfawise U20.
This excellent design is originally made by Adolf_Muffin, but I made a couple of improvements: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
An Assembly Guide
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Here's the following screws and nuts you'll need:
(13) M3 nuts
(4) M3 x 6 mm BUTTON head
(2) M3 x 8 mm any
(4) M3 x 10 mm any*
(1) M3 x 10 mm BUTTON head*
(1) M3 x 12 mm any
(4) M3 x 20 mm any
If you're using a 4020 hotend fan, use (4) M3 x 25 mm screws.
If you're using a 4010 hotend fan, use (4) M3 x 15 mm screws.…

UPDATES:  
I've updated the BASE_E3D and BASE_Volcano files since I got some feedback that some versions (different clones have slightly different dimensions) of the BMG don't fit into the mount. Also, you can adjust the Z position of the BMG now - can also be used to fine tune the Z position of the nozzle.
UPDATES:  
I've update the body and fanduct to fit on a volcano hotend (files base_volcano.stl and fanduct_volcano.stl). I haven't tried to assemble it for a volcano hotend, but it was told to me it fits. Please leave a comment, if there's any troubles.
OVERVIEW
This is an ALL METAL DIRECT DRIVE for the E3D v6 and BMG extruder (FULL DIRECT DRIVE, NO BOWDEN NEEDED!) for the standard carrier found at TEVO, CREALITY, and many other printers. I've tested it only on a TEVO Tornado, but I assume it should fit on any printer with the same carrier - see attached photo (CR10, Ender 3,...).
The following guidelines were considered when designing this extruder mount:
it should be a full all metal direct drive (with no…