MDG ENDER 3 PRO / V2 PROJECT

INTRODUCTION:

 

Hello, we are MAKERS DEVELOPMENT GROUP and this is our upgrade project designed specifically for the Ender 3 PRO,  Ender 3 V2 model 3D printers.  For other Ender 3 models please see our compatibility matrix.

 

 

UNDER CONSTRUCTION NOTICE:

This page is under construction and will be updated on a frequent basis. Please check in regularly for the latest information.

Why upgrade the Ender 3? What are the goals of this Project:

 

First, is to maximize the print reliability, print quality and print speed by upgrading the linear motion system on the X, Y and Z axis and eliminating issues associated with roller wheel wear and tensioning.

 

Second is to upgrade to dual-Z stepper motors.

Third to upgrade to a geared extruder.

And lastly to install a BIGTREETECH SKR MINI E3 V2.0 and provide a firmware configuration to maximize the MDG upgrades.

 

Simply put, we wanted to make one of the most popular consumer 3D printers even better.

 

PROJECT SPECIFICATION & PERFORMANCE:

PROJECT DESCRIPTION:

 

The MDG linear rail upgrades utilize both 3D printed and professional CNC machined 6061-T6 aluminum parts that have been MIL-A-8625 type II anodized.  The aluminum parts shown in the photos are testing prototypes, the production units will be black anodized to match the printer.  

 

Below is an overview of each upgrade for converting your ENDER 3 into an MDG Edition.

 

DUAL X-AXIS LINEAR RAIL UPGRADE:

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The MDG ENDER 3 DUAL X-Axis linear rail upgrade significantly increases the stiffness and weight carrying / load bearing capacity of the X-axis. The MDG dual X-axis linear rail upgrade features two (2) 300 mm linear rails secured to the MDG 300 MM Linear Rail Plate. The linear rail carriages are secured to the MDG CR-10 / Ender 3 Tool base. The tool base has the GT2 timing belt clamp mounted to the back side while the MDG Ender 3 / CR-10 direct drive hotend mount is secured to the topside.

In addition, the upgrade is compatible with common Dual-Z stepper motor upgrades.  Simply purchase three (3) additional MDG spacers for the right side (shown above).

 

The MDG ENDER 3 DUAL X-Axis linear rail upgrade  has the following key features:

  • CNC machined pockets for mounting and aligning the linear rails - machined pockets provide easy mounting and alignment of linear rails and are machined to HIWIN dimensional specifications.
     

  • Linear rail or roller wheel Z - The MDG linear rail plate allows for two (2) types of Z-axis linear motion including roller wheels and MGNH linear rails. Allowing the use of roller wheels on the Z-axis can allow for a step-by-step upgrade approach to spread the project costs over time.
     

  • Shoulder Screw For Belt Idler Pivot - standard screws are less then ideal for belt idler pivots.  MDG kits feature precision ground shoulder screws and shims.  This eliminates lateral translation of the idler bearings. 
     

  • Tool Base and Extruder Mount System - MDG dual linear rail kits feature two (2) plates on the X-axis gantry.  The lower plate called the "Tool Base" is mounted to the linear rails and secures the GT2 Belt.  The second plate is the "Extruder / Hotend mount" or just the extruder mount for short.  This system allow easy swapping / removal of the extruder without effecting belt tensioning or rail alignment. 
     

  • Direct Drive Extruder Mounts - All MDG extruder mounts are direct drive with short, constrained filament paths.  MDG mounts are available for the more popular extruders and hotends.  If you don't see the combination of your choice please send us an email request.  Released mounts for the Ender 3 include:

    BONDTECH BMG Mirror / Slice Copperhead, Groove Mount 
    BONDTECH BMG Mirror / E3D V6 
    BONDTECH BMG Mirror / Micro-Swiss 
    E3D TITAN Mirror / Micro-Swiss
    CREALITY / Micro-Swiss
     

  • 5015 Centrifugal Blower Upgrade - all MDG direct drive mounts for the Ender 3 include a mounting location for a single 5015 centrifugal blower.  This significantly improves print cooling over the small OEM fan.  If you select the option to add a fan, MDG will include a high static pressure, high flow, 24V brushless motor 5015 Centrifugal Blower with ball bearings.  This isn't you  your average blower.
     

  • Universal Mounting for the ultimate 3D printing enthusiast - The MDG X-axis linear rail kits can be used on your custom printer design.  The MDG X-AXIS DUAL LINEAR RAIL PLATE, 300 MM can be used on any custom Cartesian motion 3D printer build that uses 2040 aluminum extrusion uprights that have an outside-edge to outside-edge dimension of 330mm. 
     

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DUAL Y-Axis Linear Rail Upgrade with Solid Bed Spacers

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The MDG DUAL-Y LINEAR RAIL KIT, ENDER 3 mounts dual linear rail to the Y-axis on ENDER 3 PRO / ENDER 3 V2 3D printers. This upgrade features two (2) 350 mm MGNR12 style linear rails with two (2) H style linear rail carriages and the MDG DUAL-Y linear rail mount set.

The MDG DUAL-Y LINEAR RAIL KIT, ENDER 3 has the following key features:

  • CNC Machined rail mounts - far superior to printed mounts.  Significantly stiffer and don't soften or creep with temperature.  Perfect for printing in an enclosure.
     

  • Even Weight Distribution - use of dual liner rails on the Y-axis allow for evenly distributed weight on each linear rail.  This lends to reduced rail wear as there is no cantilevered load trying to "twist" the rail carriage.
     

  • Easy Installation - the kit can be installed without removing tension from the Y-axis drive belt or detaching the belt from the bed sled.
     

  • 12MM Linear rails - overkill for an Ender 3?  Sure, but why not? 

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The MDG DUAL-Y LINEAR RAIL MOUNT SET, ENDER 3 secures the OEM ENDER 3 print bed plate to the linear rail carriages and is easy to install.  Since the MDG linear rail mounts are made of CNC machined aluminum they are prefect for printing inside an enclosure as they won’t deflect, deform or soften inside a heated chamber.

 

For the best 3D printing experience, we recommend using the MDG SOLID BED LEVEL SPACER SET in conjunction with a bed leveling probe such as the BL Touch.

DUAL Z-Axis Linear Rail Upgrade

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The MDG DUAL-Z LINEAR RAIL KIT, ENDER 3 mounts dual linear rails on the Z-axis and features an upper and lower alignment block to ensure the rails are properly spaced and parallel.  This upgrade is compatible with 3rd party dual Z stepper motor kits.  If upgrading to a dual Z stepper motor go here for the kit tested and recommended by MDG.     

 

COMPATIBILITY MATRIX:

The MDG ENDER 3 upgrades are compatible with both the ENDER 3 PRO and ENDER 3 V2.  

 

INSTALLATION INSTRUCTIONS

 

Below is a pdf copy of our MDG ENDER 3 V2 / PRO Installation Instructions. This will provide a walk-through for installing MDG kits & components.

UNDER CONSTRUCTION

INSTALLATION & ASSEMBLY DRAWINGS

 

Below is a pdf copy of our MDG ENDER 3 Installation drawings. This will provide a walk-through for installing MDG kits & components.

 

MDG DUAL-X LINEAR RAIL KIT ASSEMBLY DRAWING

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MDG DUAL-Y LINEAR RAIL KIT ASSEMBLY DRAWING

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MDG DUAL-Y LINEAR RAIL KIT ASSEMBLY DRAWING

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BILL OF MATERIAL

STL Files, Drawings & Firmware

Please visit the MDG GITHUB PAGE for drawings, bill of materials, STL files, and firmware.  This is the main repository for all MDG project files.