glue Magnet under MK2s heat bed to use a Springsteel sheet?
 

glue Magnet under MK2s heat bed to use a Springsteel sheet?  

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marcusrothspace
(@marcusrothspace)
New Member

I have a MK2s and an MK3s and I love the spring steel sheet of the MK3s.

 

Basically I don’t want to do the 2.5 Upgrade for 200€ but still use a spring steel sheet on the MK2s

I need advice on how many magnets. And the size and strength. Or what magnets the MK3s headbed is using.

I know I will need magnets usable over 100°C

 

thanks in advance

Posted : 12/07/2020 9:08 am
charles.h13
(@charles-h13)
Famed Member

I used JB Weld.  

Posted : 12/07/2020 10:10 am
FransKrau
(@franskrau)
Trusted Member

Hi,

I have upgraded two MK2s with magnets and made my own steel sheets with prusa PEI and lokbuild. When the Prusa textured springsteel sheets where available I ordered them. It works very good!! Textured for PETG and PEI/Lokbuild for PLA (PLA will not stick very well on the textured sheet, is my experience)

I bought the magnets from Alie. They are round 20 mm and 5 mm thick. Just look at Alie and choose magnets that can resist 100 degrees celcius.

For gluing I used Deltafix double sided tape (19 mm) art. nr 248 (-40 to + 120 degrees celcius).

I mounted 11 magnets under the pcb heatbed and removed the original PEI sheet. Before gluing, chose the locations carefully, otherwise the magnet will interfere with the calibration points in the heatbed. The XY calibration will not work (I have to replace 2 mangets 🙂

When gluing the magnets be sure you place them all in the same direction. Before gluing I marked all the magnets, so I couldn't make a fault.

The heatbed can easliy be dismounted by unscrewing the 4 screws at the edges and the 2 screws in the middle. Turn the bed over and you can very easy glue the magnets.

 

Hope this will help you

 

Frans

 

 

Frans Krau
Europe, Holland, Apeldoorn...
Posted : 28/07/2020 10:17 pm
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