126 lines
5.6 KiB
Markdown
126 lines
5.6 KiB
Markdown
# Afterburner + LGX
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Useful links, info, and models for using the The LGX™ Large Gears eXtruder with Afterburner...
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If you have anything to add/modify/delete hit me up on discord - I'd like to keep this information as useful and current as possible to make LGX life easier for all.
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- [Afterburner LGX Mounts](#afterburner-lgx-mounts)
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- [MGN12/Trident X Carriage](#mgn12trident-x-carriage)
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- [Stealthburner](#stealthburner)
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- [Wiring](#wiring)
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- [Klipper config](#klipper-config)
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- [Extra LGX Models](#extra-lgx-models)
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* [LGX Cable Cover](#lgx-cable-cover)
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* [LGX Gear Cover](#lgx-gear-cover)
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* [LGX Lever Cover](#lgx-lever-cover)
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* [30mm Mount Screws](#30mm-mount-screws)
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---
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### Afterburner LGX Mounts
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Mounting the LXG to AfterBurner requires some additional mounting plates. You will need both of `@Nemgrea`'s mounts from Discord:
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* `@Nemgrea`'s `lgx_AftB_Mount_Front.STL` ([Discord file link](https://cdn.discordapp.com/attachments/635687829254701107/823914498700083220/lgx_AftB_Mount_Front.STL))
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* `@Nemgrea`'s `lgx_AftB_Mount_Rear.STL` ([Discord file link](https://cdn.discordapp.com/attachments/635687829254701107/823914501405540442/lgx_AftB_Mount_Rear.STL))
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These models are pinned in the [#voronuser_mods](https://discord.com/channels/460117602945990666/635687829254701107/823914498808217621) channel on Discord, and can be found in [this message](https://discord.com/channels/460117602945990666/635687829254701107/823914498808217621).
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Thanks to `@Nemgrea V2.199 V0.000` and the crew for their efforts designing and testing the mounts, and offering them to the community.
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### MGN12/Trident X Carriage
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The above Afterburner mounts will work without alteration in the current MGN12/Trident x carriage. However, once the rear mount is installed you can no longer access the linear rail block screws. This mod to the rear mount addresses that.
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* [`lgx-mgn12-mount-rear.stl`](STLs/mgn12/lgx-mgn12-mount-rear.stl)
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### Stealthburner
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**The Stealthburner beta does not include support for LGX.**
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Please don't ask the Stealthburner crew about LGX support, LGX mounts, etc - they have plenty of other Stealthburner things to focus on :)
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That said, a number of people are unofficialy running LGX with Stealthburner using the Afterburner mounts.
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### Wiring
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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.
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Technical specifications for the motor can be found on the [Bondtech website](https://www.bondtech.se/product/lgx-pancake-25mm-stepper-motor/), including a [wiring diagram](https://www.bondtech.se/wp-content/uploads/2021/01/Bondtech-E-Motor-LDO-42STH25-1004ACGBDT-RevB.pdf). In case the wiring diagram goes away you can also find it [here](images/Bondtech-E-Motor-LDO-42STH25-1004ACGBDT-RevB.pdf).
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Note that the wiring diagram mixes up the wire color names with the color representation
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so don't necessarily rely on the colors (which you shouldn't be doing anyway - see the [Stepper Motor Wiring](https://docs.vorondesign.com/build/electrical/#stepper-motor-wiring) notes in the Voron build guide).
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Once wired up, be sure to buzz your extruder stepper, as described in the [Voron initial startup](https://docs.vorondesign.com/build/startup/#stepper-motor-check) documentation. For example:
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```
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STEPPER_BUZZ STEPPER=extruder
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```
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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.
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### Klipper config
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Bondtech has some official documentation for configuring Klipper [here](https://www.bondtech.se/product-category/upgrade-kits/lgx/). Below is the configuration I am currently running.
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```
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rotation_distance: 8
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microsteps: 16
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full_steps_per_rotation: 200
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# use either these two config options together
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# gear_ratio: 44:14, 37:17
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# rotation_distance: 55
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# or
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# rotation_distance: 8
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# by itself, but definitely not
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# gear_ratio: 44:14, 37:17
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# rotation_distance: 8
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# or bad things will happen!
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```
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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...
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### Extra LGX Models
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#### LGX Cable Cover
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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](https://github.com/craxoor/VoronMods/tree/master/PCB%20Cover) 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.
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* [`lgx-cable-cover.stl`](STLs/extras/lgx-cable-cover.stl)
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(Cereal not included)
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#### LGX Gear Cover
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A little cover for the Large Gears on the LGX so it doesn't chew through the fan wires.
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* [`lgx-gear-cover.stl`](STLs/extras/lgx-gear-cover.stl)
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#### LGX Lever Cover
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Drop-in replacement for the filament pre-tension lever, in case you want a different color:
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* [`lgx-lever-cover.stl`](STLs/extras/lgx-lever-cover.stl)
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#### 30mm Mount Screws
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I stripped one of the M3x27 low-profile screws that came with the LGX, and have yet to find replacements. To keep going, I made some adjustments to the front mount and blower housing to accommodate standard M3x30 screws.
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* [`30mm-lgx-mount-front.stl`](STLs/30mm-screws/30mm-lgx-mount-front.stl)
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* [`30mm-lgx-blower-housing-rear.stl`](STLs/30mm-screws/30mm-lgx-blower-housing-rear.stl)
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