# Longer LK4 Pro
also known as the Alfawise U30 Pro and Diggro Alpha-3. Based on the Creality Ender 3.

Ships with a [LGT_KIT_V1.0](https://www.longer3d.com/products/mainboard-of-loner-lk4-pro-u30-pro) (a [RAMPS 1.3](https://reprap.org/wiki/RAMPS_1.3) derivative) as stock.

## Octoprint setup

^ General                                    ^^
| Name                      | Longer LK4 Pro  |
| Identifier                | _default        |
| Model                     | Longer LK4 Pro  |
^ Print bed & build volume                   ^^
| Form factor               | Rectangular     |
| Origin                    | Lower Left      |
| Heated Bed                | **ON**          |
| Heated Chamber            | **OFF**         |
| Width (X)                 | 220mm           |
| Depth (Y)                 | 220mm           |
| Height (Z)                | 250mm           |
^ Axes                                       ^^
| X                         | 6000mm/min      |
| Y                         | 6000mm/min      |
| Z                         | 200mm/min       |
| E                         | 300mm/min       |
^ Hotend & extruder                          ^^
| Nozzle Diameter           | 0.4mm           |
| Number of Extruders       | 1               |

## Modifications

* [U30 / Longer LK4 Pro Filament Guide](https://www.thingiverse.com/thing:4166253) by thenewfguy
* [Z-Axis Holder for LK4 Pro/U30 Pro](https://www.thingiverse.com/thing:4551854) by fredos34
* [Fan Duct Longer LK4 & LK4 Pro](https://www.thingiverse.com/thing:4242796) by Thibis
* [Fan Silencer_V1 40mm - 38mm](https://www.thingiverse.com/thing:2988448) by darkwave3D
* [Power Supply (PSU) fan silencer (Ender 3)](https://www.thingiverse.com/thing:4631303)
by timqui

### BLTouch

* [Tutorial of BLTouch for Longer LK1/LK4/LK4 PRO/LK5 PRO](https://www.longer3d.com/blogs/news/tutorial-of-bltouch-for-longer-lk1-lk4-lk4-pro-lk5-pro-3d-printer) by Longer3D
* [Unified Bed Leveling](https://marlinfw.org/docs/features/unified_bed_leveling.html) for Marlin 1.1.x. 
* [BLTouch mount for Longer lk4 pro / Alfawise U30](https://www.thingiverse.com/thing:4584449) by DonJon99
* [LK4Pro-Marlin1.1.9-BLTouch](https://github.com/GeoCyberwolf/LK4Pro-Marlin1.1.9-BLTouch) by GeoCyberwolf
* [Longer LK4 Pro - BL Touch Setup Guide](https://www.thingiverse.com/thing:4608998) by groundstriketactical 


## Reference
<callout type="info" title="TF Card Content">{{ :voiding:lk4-pro:lk4_pro_sd_card_content.rar }}

SHA-256: `dcb350698bfeeb58aee13fb05346308765839b02917f913fab7c42af3242cf26`

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>


### User Guides
<callout type="info" title="Quick Start Guide">{{ :voiding:lk4-pro:6b06a4_36272ca8efb247158f798b8bbd643d07.pdf }}

SHA-256: `d9112fac7fdf1ecc439c3d4b94ae2aa7d2d237dc9db7838d3879b71c184a9330`

Archived from [the original](https://5e1fdc24-c0d9-4129-83d6-cefb597c6fcd.filesusr.com/ugd/6b06a4_36272ca8efb247158f798b8bbd643d07.pdf), last modified 04 Nov 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

<callout type="info" title="Instruction Manual (English)">{{ :voiding:lk4-pro:lk4_pro_instruction_manual.pdf | LK4 Pro instruction manual.pdf }}

Extracted from TF Card: `LK4 ProSD卡文件/Instruction manual/LK4 Pro instruction manual.pdf`.

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

<callout type="info" title="Instruction Manual (German/Deutsch)">{{ :voiding:lk4-pro:lk4_pro_bedienungsanleitung.pdf | LK4 Pro Bedienungsanleitung.pdf}}

Extracted from TF Card: `LK4 ProSD卡文件/Instruction manual/LK4 Pro Bedienungsanleitung.pdf`.

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

<callout type="info" title="Instruction Manual (Spanish/Español)">{{ :voiding:lk4-pro:manual_de_instrucciones_de_lk4_pro.pdf | Manual de instrucciones de LK4 Pro.pdf}}

Extracted from TF Card: `LK4 ProSD卡文件/Instruction manual/Manual de instrucciones de LK4 Pro.pdf`.

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

<callout type="info" title="Instruction Manual (Italian/Italiano)">{{ :voiding:lk4-pro:manuale_di_istruzioni_lk4_pro.pdf | Manuale di istruzioni LK4 Pro.pdf}}

Extracted from TF Card: `LK4 ProSD卡文件/Instruction manual/Manuale di istruzioni LK4 Pro.pdf`.

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

<callout type="info" title="Instruction Manual (French/Français)">{{ :voiding:lk4-pro:manuel_d_instruction_lk4_pro.pdf | Manuel d'instruction LK4 Pro.pdf}}

Extracted from TF Card: `LK4 ProSD卡文件/Instruction manual/Manuel d'instruction LK4 Pro.pdf`.

Archived from [the original](https://drive.google.com/file/d/1e6oZGLPpxbsv8AnCKXKee_ES2UUrFdnH/view?usp=sharing), last modified 11 May 2020.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/printer-download-guildelines)</callout>

### Cura 4.8 setup

<callout type="info" title="Resources Files">{{ :voiding:lk4-pro:resources2.zip |}}

SHA-256: `9d29e8ac69d79b001307146ccc126d11023ee9634ab77348d56a8c000ee43df2`

Archived from [the original](https://drive.google.com/file/d/1VDaifzEMPeWE9hqGJ3G22aBLGmS-BTL-/view), last modified 29 Jan 2021.
Originally hosted on [longer3d.com](https://www.longer3d.com/blogs/news/add-longer-3d-printers-to-cura-4-8-version)</callout>

* Video: [Add Longer 3d printers into Cura 4.8](https://youtu.be/jdLYBYFEBlQ) by Longer3D