Useful links, info, and models for using the The LGX™ Large Gears eXtruder with Afterburner...
Mounting the LXG to AfterBurner requires some additional mounting plates. You will need both of @Nemgrea's mounts from Discord:
@Nemgrea'slgx_AftB_Mount_Front.STL(Discord file link)@Nemgrea'slgx_AftB_Mount_Rear.STL(Discord file link)
These models are pinned in the #voronuser_mods channel on Discord, and can be found in this message.
Thanks to @Nemgrea V2.199 V0.000 and the crew for their efforts designing and testing the mounts, and offering them to the community.
Aside: For my own build, I found that my third-party M3x20 screws had a large enough head that the toolhead couldn't mount to the X Carriage assembly properly without a bit more clearance. If you find yourself in this situation, this mod of @Nemgrea's mount is nearly identical to the one on Discord but with slightly more clearance for the bottom screws. Please try the (semi)official one first before using this mod :)
The LGX uses a JST-PH 6-pin connector, which is not part of any standard Voron BOM so you'll need to source that on your own.
Technical specifications for the motor can be found on the Bondtech website, including a wiring diagram. In case the wiring diagram goes away you can also find it here.
Note that the wiring diagram mixes up the wire color names with the color representation
so don't necessarily rely on the colors (which you shouldn't be doing anyway - see the Stepper Motor Wiring notes in the Voron build guide).
Once wired up, be sure to buzz your extruder stepper, as described in the Voron initial startup documentation. For example:
STEPPER_BUZZ STEPPER=extruder
If your LGX grinds instead of operating normally, make sure that you have the inner two wires (pins 3 and 4) matched up properly - inverting center two wires is a common initial issue.
Bondtech has some official documentation for configuring Klipper here. Below is the configuration I am currently running.
rotation_distance: 8
microsteps: 16
full_steps_per_rotation: 200
# use either these two config options together
# gear_ratio: 44:14, 37:17
# rotation_distance: 55
# or
# rotation_distance: 8
# by itself, but definitely not
# gear_ratio: 44:14, 37:17
# rotation_distance: 8
# or bad things will happen!
The either...or warning is not from Bondtech, but provided here to honor the memory and sacrifice of my first hotend and save those that may come after from suffering the same fate...
Besides the mounting parts, most people end up asking about a cable cover. There are a few posted around Discord, but after seeing Craxoor's PCB cover I designed a similar cover from scratch for use with the LGX. Note that this cover does not work with the toolhead PCB - it just looks similar.
(Cereal not included)
A little cover for the Large Gears on the LGX so it doesn't chew through the fan wires.
Drop-in replacement for the filament pre-tension lever, in case you want a different color:
