MX MiniK3 Upgrade Kit

Description

Set 1：
MX Buddy Rev1 x 1
Motor Connector x 5
Extruder Gear Kit x 1
Screen x 1
Shim x 4
Bearing x 2

Set 2：
MX Buddy Rev1 x 1
Motor Connector x 5
Extruder Gear Kit x 1
Screen x 1
Shim x 4
Bearing x 2
Extruder Print Parts x 1
MX Print Fan(6500RPM high flow） x 1

Set 3：
MX Buddy Rev1 x 1
Motor Connector x 5
Extruder Gear Kit x 1
Screen x 1
Shim x 4
Bearing x 2
MX Print Fan(大风压） x 1
Extruder Print Parts x 1
MX IR FIlament Sensor(Green/Red Dual LED Indicator)

Set 4：
MX Buddy Rev1 x 1
Motor Connector x 5
Extruder Gear Kit x 1
Screen x 1
Shim x 4
Bearing x 2
Extruder Print Parts x 1
MX Print Fan(6500RPM high flow） x 1
MX IR FIlament Sensor(Green/Red Dual LED Indicator)
MX Pancake Extruder x 1

This is a clone upgrade for Original MK3/MK3S/MK3S+ or other MK3 serial clones. The idea is from MINI firmware 5.1 as it supports high speed printing and input shaper. So we have an idea, why we don’t upgrade a MK3 to a MINI firmware. If you did too, you will have a single color printer like MK4 with high print speed and quality, bug without MMU support.

Here’s all changes compare with MK3, but you can also keep your original xyz, just upgrade the BigBuddy board and Extruder(the PSU of some clones has lack of power, suggest to upgrade to more than 300w PSU)

X:
1.  one of the rail upgrade to 9mm linear rail, using Long 9mm block.
2. Bear X print parts with 10mm bearing support.

Y:
1.  Upgrade to 12mm linear rail(optional)
2. Upgrade to Original PRUSA MK4 Y belt print parts.
it’s from jfromel’s Y linear rail remix
https://www.printables.com/model/20284-y-axis-linear-rail-remix

Z:
1.  Upgrade to 10mm rail & LM10UUL bearing(optional)
2. Upgrade to Original PRUSA MK4 Z print parts
3. Print TPU Pad instead of Rubber Pad.

E:
Upgrade to 9 deg Pancake Motor with stock gear.
It takes a huge works on extruder development,  finish the filament sensor trigger, fitting the extruder gear, etc. Edit STL is a really hard work.
it’s from Tomson Design
https://www.printables.com/model/74874-mini-bear-stock-gear-extruder

Mainboard Case:
This is a simple remix from Boogie
https://www.printables.com/model/31558-big-einsy-case

PSU:
1. Upgrade to MeanWell LRS 350
2. Print part is from Frio on
https://www.thingiverse.com/thing:3329838

BigBuddy board:
The Buddy board was remixed too, as the heatbed has been much more powerful. Be noticed that you will got no support from this buddy board remix project. Please take your own risk.
https://github.com/MX-RESEARCH/MX_Buddy_Board

Firmware:
Source Code: https://github.com/MX-RESEARCH/MX-Firmware-Buddy-5.1.2
1. Improve XY Input Shaper Freq default settings.
2. update logo
3. fix  screen flashing
4. fix error
5. increase unload filament length
6. lower hotend/bed mintemp to 0
7. increase maxtemp/safety margin for hotend
8. increase hotend fan speed

Download bbf: https://www.mxind.com/en/download/aff/1/?v=1c2903397d88
Most of the parts are from Original PRUSA and  communities,  thank you so much for all the contribution.