Monday, October 2, 2017

Prusa i3 MK2s 3D Printer Upgrade Timelapse Video

I have been planning on upgrading my Prusa i3 MK2 to the MK2s version for a while now.  After the MK2s was annouced, I set forth to get the required components. Most of the 3D Printed parts were readily available on the Prusa web site, but I also found a few upgrades (Aaron Yourk's TinkerCAD page) that I wanted to include this time around. Here is a full list of what I decided to modify.
  • Upgraded MK2s Extruder Assembly with Cable Chain adapter
  • New E3D V6 Hotend (last one was pretty messy)
  • Upgrade to 40mm Noctua Extruder Fan and housing
  • Upgraded Cable Chain for Extruder Cables
  • New Y-Axis frame helper to keep things square
  • New Misumi Bearings
  • New Misumi Hardened Rods
Here is a pic of the current MK2.  Has been operational for around 7 months, and prints really well. Very happy with it, but I know from user feedback better bearings and rods will make for quieter operation and possibly allow for faster print times.  

I have a bunch of picture following the process, but if you are just interested in the timelapse video, jump to the bottom of the post.  For anyone interested in the Misumi parts, here is what I purchased:

Here we have all the  parts that will go into the upgrade. Anything around the extruder where it will get hot were printed in ABS, the rest are PLA. 

Here is a close up of the parts.

First step was to take apart the existing printer and start assembling the new frame. The upgraded Y-Axis front and back make the entire process much easier, and there is no room for error as it keeps everything nice and square. This is a great upgrade because getting the frame perpendicular was a real challenge with my first Prusa i3. 

With the frame assembled, I got to work on the X-Axis components and extruder assembly. Most of this would be stock components aside from the new 40mm Noctua Fan and Fan Guards. 

Went through the process of attaching the extruder assembly to the X-Axis and leaving the cables behind, awaiting the addition of the cable chain.  As mentioned before I decided to install a new V6 Hotend, as the last one was pretty messy after a few print failures that caused the filament to backup. 

Same but from the front. 

Here is a shot from the back showing the cable chain.  I actually added a few more links (24 total) than what are shown in this picture after testing operation and determining I needed more for it to not bind during certain points of movement. 

Here we have the fully assembled printer in a side by side comparison withe the previous MK2 configuration. I think the Black / Blue color combo looks a lot better. 

Went through the initial calibration process, and we are Perpendicular after the first try!  Last time it took me a while to get here, so the upgraded parts are already doing their part in saving me time. 

Here is a pic of everything put back into the print Enclosure, ready to start printing. 

My very first print was the TreeFrog Gcode found on the SD Card.  It printed well, so I moved on to some "functional parts". Below can be seen a few parts that will go towards upgrading my Quad Racing Drone. Turned out perfect. Print quality is excellent, and operation is a bit more quiet. 

Very happy overall with how the upgrade turned out, and was also able to capture the entire process with my Nikon D5600 in a Timelapse video. Check it out below. 


  1. Great looking upgrade. Can you share where you found the modified printed parts?

  2. This comment has been removed by the author.

  3. Same here. I want to add the modified printed parts because I never could get the frame to square up. Where did you get the modified printed parts? Thanks!

  4. Please post the part list links. Thank you.

  5. All of the modified (non-stock) parts from Aaron York's TinkerCad page.

  6. Sir, Great build review! however I cannot seem to locate the y axis PSU mount that you have shown, namely,the two blue tubes you have covering the threaded rods in the back of the Y Axis that is the PSU mount, is that somewhere else? any assistance is greatly appreciated.

    1. Probably a bit late for you but hopefully this helps anyone who is also looking for these in the future.
      Noticed that in some of Aarons files had ID's from thingyverse in the titles. Looks like the parts were remixed from this

  7. Great Upgrade/Rebuild review. Would you be able to direct me to the "tubed y axis PSU mount you have in the photo? I cannot seem to locate it on Aaron Yorks page.

  8. I made it. I still have a good improvement


  9. I made it. I still have a good improvement

  10. where did you find the 2 rods at the back of the y y carriage. Are there on Aaron York's TinkerCad page ?