Has anybody upgraded just the heated bed to MK52?
 

Has anybody upgraded just the heated bed to MK52?  

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bob.s7
(@bob-s7)
Active Member

Has anybody upgraded just the heated bed on their MK2S to a MK52 heated bed? I know that you would need to upgrade the firmware to the MK2.5 firmware, but I'm not sure that any other changes would need to be made. There used to be an answer on Prusa's manuals site, but it looks like it was taken down at some point.

Posted : 15/02/2019 5:40 pm
bob.s7
(@bob-s7)
Active Member

As an update to this conversation, I had a chat with Prusa tech support and got two pieces of information:
- The MK52 12V heatbed does not include the standoffs that come with the MK3/MK2.5 upgrade kits. These can be purchased separately in the parts store for the MK3.
- It also does not come with the screws that anchor the bed to the carriage. The size of the screws is M3x14 counter-sunk bolts. I found some on Amazon (in the USA), but they will take a while to get here from China.

I also purchased the MK3 carriage since it gives 9 support points instead of 5. I measured the distances between the X axis rails on the MK2S and the MK3 to verify that they are the same, so I think that it will fit with no problem. I will update as I work through this exercise.

Posted : 22/02/2019 12:35 am
lee.g
(@lee-g)
Estimable Member

Watching with interest.

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Posted : 23/02/2019 6:25 pm
joan.t
(@joantabb)
Veteran Member Moderator

mk52 12volt heat bed has 8 screw fixing, matching the mk2 y platform, and some of the XYZ calibration pads are in different places to the mk42 headbed

the mk52 24 volt heatbed has 9 screw fixing, matching the mk3 y platform

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 23/02/2019 8:12 pm
tupilac333
(@tupilac333)
New Member

Hi,

I'm just going to upgrade the MK2S hotbed itself without the extruder upgrade, has anyone done it and how does it work? I bought a 2S upgrade to 2.5S and I received information from the PRUSA support department that this is possible, but I still do not know about a few things:
- I do not know if I need to change the PINDA probe to a new one? whether the old one from PINDA from mk2S will work?
- What about the MK52 hotbed mount? and distance for bolts?
- Do I have to upgrade FW to 3.7.2 if I have to stay on FW 3.2.3

For sure, after installing the new MK52, 12V I will have to do XYX calibrations and certain calibrations of PINDA + first layer calib. it is obvious.

Thank you for all the information from your experience

Posted : 30/07/2019 6:39 am
joan.t
(@joantabb)
Veteran Member Moderator

my mk2 runs on 3.2.3 firmware,  has 12volt mk52 heatbed, standard 12v extruder fan and 12volt  part fan, 3wire original Pinda

XYZ calibration wont work because the pinda sense pads are in different places. just do Z czlibration and Live Z.

make sure the build plate is clean, for PLA prints.

 

Good luck, Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 30/07/2019 12:20 pm
tupilac333
(@tupilac333)
New Member

Hi, Thanks for a quick response.

This is great news from you that this upgrade works. I will try to upgrade my mk2S only with the Mk 52 hotbed. Have not you noticed any deterioration of printouts, after changing the hotbed? or signs of Bed Thermal Runaway? ect.?

Thanks

BTW. Did you mean to say "make sure the build plate is clean, for PLA prints."  is it about the new MK52 hotbed plate or PEI sheet? 

Posted : 31/07/2019 2:26 am
daniel.krah
(@daniel-krah)
Eminent Member

I have just rebuild my dolly to a original MK3 frame.

The it uses a pinda V1, the old extruder with 1mm aligned body for the bigger gear.

A self modeled bottom part to mount the MK3s fan shroud.

Motorholder with Endstops.

the heatbed is a Blurolls one because Prusa Research doesn't want to sell me one.

the powder coated pei sheet is actually a triangle labs one because Prusa Research doesn't want to sell me one.

But now i will get a original one from Prusa research from australia which was shipped from europe to australia and then back to europe because Prusa Research doesn't want to sell me one.

As far as i understood the firmware source you can run all printer with the newest firmware you just need the right board definition and the right combination of turned on/off features.

I am currently using tmc2100 and lvXXXX for the extruder but will later switch to TMC2209 when i figured out how to put it into the prusa source code

 

Posted : 06/09/2019 11:26 pm
wiktor.s
(@wiktor-s)
New Member
Posted by: @joantabb

my mk2 runs on 3.2.3 firmware,  has 12volt mk52 heatbed, standard 12v extruder fan and 12volt  part fan, 3wire original Pinda

XYZ calibration wont work because the pinda sense pads are in different places. just do Z czlibration and Live Z.

make sure the build plate is clean, for PLA prints.

 

Good luck, Joan

Am I understanding this correctly? After changing (only) the bed from MK42 to the MK52 magnetic bed on Prusa mk2s, there is no more possibility to do the XYZ calibration? What should be the calibration procedure then?

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Posted : 14/02/2020 8:57 am
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