MK3S+ to MK4 Upgrade - confirm which parts to print?
 
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MK3S+ to MK4 Upgrade - confirm which parts to print?  

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Burgerson
(@burgerson)
Member
MK3S+ to MK4 Upgrade - confirm which parts to print?

My MK3S+ is my only printer so I want to be sure I am printing every part I may need before commencing my upgrade to the MK4.  I have the kit and I have read the instructions and gone to the Printables page and I THINK that I only need to print the seven (7) parts listed in the MK3S&MK3S+ to MK4&MK3.9 upgrade G-codes folder.  Can someone confirm for me that these are the only ones I need to print before I start to disassemble my machine?

Thanks - maybe I am overthinking this and over-worrying but I don't want to end up in a bad place with this!

Cheers

Posted : 01/03/2024 6:08 pm
vhubbard
(@vhubbard)
Reputable Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

 I have done the upgrade.   All the printed parts change for an MK3.9 or MK4 upgrade. Print ALL the MK4 printable parts.   

Posted : 02/03/2024 1:17 pm
vhubbard
(@vhubbard)
Reputable Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

There are multiple parts per G code file.  It may take a few days. 

Posted : 02/03/2024 1:24 pm
marlbenn
(@marlbenn)
Active Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

Help.  I'm confused.  When I upgraded my MMU to MMU3 there were a load of parts which I had to print myself.  Together with supplied spools of filament.  No problem, the instructions were clear.

I have now purchased the Mk4S upgrade kit for my Mk3S+.  It comes with pre-printed parts and no spools of filament, and I don't see anything in the assembly instructions about having to print parts beforehand.  Or am I missing something obvious?

I obviously don't want to dismantle my printer  only to find I am missing printable parts.  Do I really need to print all the Mk4 parts beforehand???

Posted : 25/10/2024 9:49 am
j3270
(@j3270)
Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

Same question/situation here.  I have a mk3s+ an have purchased the mk4s upgrade.  I thought I had previously seen instructions not to disassemble the mk3s+ until printing required parts for the upgrade and that filament would be provided.  Has this changed?  Are the required parts now supplied in the kit?

Thanks,

Posted : 25/10/2024 11:43 pm
marlbenn
(@marlbenn)
Active Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

Hi

Prusa have just conformed to me that all printed parts are supplied with the kit and I do not need to print any beforehand.  With the possible exception of a psu cover if I am upgrading from silver to black psu.

Hope this helps.

 

Posted : 04/11/2024 8:26 pm
Szumi
(@szumi)
Eminent Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

I'm just starting to do the mk3s to MK4 upgrade.  You have to print parts.  The only printed parts included are a few pieces printed out of something that resists more heat than petg.  

I wish they had split up the parts in the 7 gcode file, as it is a 14hr print job.  I'll likely print them one at a time.

I looked through the 7 g code files and made this list of what parts are in them.  

 

gcode 1

y-rod-holder-R2.stl id:0 copy 0

gcode 2

x-carriage-back-R2-B.stl id:0 copy 0
x-carriage-cable-holder-cover-R2.stl id:1 copy 0
x-carriage-cable-holder-R2.stl id:2 copy 0
x-carriage-clip-R2.stl id:3 copy 0
x-carriage-R2.stl id:4 copy 0

gcode 3

Knob-R2.stl id:0 copy 0
xlcd_support_left_R3.stl id:1 copy 0
xlcd-support-right-R3.stl id:2 copy 0
xlcd-cover-R3.stl id:3 copy 0

gcode 4

fan-door-R2.stl id:0 copy 0
idler-lever-A-R2.stl id:1 copy 0
idler-lever-B-R2.stl id:2 copy 0
LoveBoard-cover-back-R2.stl id:3 copy 0
LoveBoard-cover-right-R2.stl id:4 copy 0
main-plate-R2.stl id:5 copy 0
PG-assembly-adapter-MK3-R2.stl id:6 copy 0
pg-front-case-R3.stl id:7 copy 0
idler-swivel-R2.stl id:8 copy 0
idler-swivel-R2.stl id:9 copy 0
idler-nut-R2.stl id:10 copy 0


gcode 5

ext-cable-holder-b-R2.stl id:0 copy 0
x-holder-R2.stl id:1 copy 0
ext-cable-holder-A-R2.stl id:2 copy 0
heatbed-cable-cover-bottom-R2.stl id:3 copy 0
 heatbed-cable-cover-top-R2.stl id:4 copy 0
heatbed-cable-holder-R2.stl id:5 copy 0
wifi-cover-R2.stl id:6 copy 0
el-box-cover-R2.stl id:7 copy 0

gcode 6
filament-guide-R2.stl id:0 copy 0

gCODE 7
z-bottom-right-R2.stl id:0 copy 0
z-bottom-left-R2.stl id:1 copy 0
x-end-motor-R2.stl id:2 copy 0
x-end-idler-R2.stl id:3 copy 0
x-end-clip-R2.stl id:4 copy 0
x-end-clip-R2.stl id:5 copy 0
z-top-right-R3.stl id:6 copy 0
z-top-left-R3.stl id:7 copy 0


 

 

 

Posted : 24/11/2025 5:19 pm
Szumi
(@szumi)
Eminent Member
RE: MK3S+ to MK4 Upgrade - confirm which parts to print?

Left some out of the gcode 1 listing.

gcode 1

y-rod-holder-R2.stl id:0 copy 0
y-rod-holder-R2.stl id:1 copy 0
y-rod-holder-R2.stl id:2 copy 0
y-rod-holder-R2.stl id:3 copy 0
y-belt-holder-R2.stl id:4 copy 0
y-belt-holder-tensioner-R2.stl id:5 copy 0
y-idler-R2.stl id:6 copy 0
y_motor_holder_R3.stl id:7 copy 0
Posted : 26/11/2025 6:19 pm
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