3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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Yea, I can see that now, It is how it came from the factory.
I could try to seperate the Glass from the aluminum heat bed, though I fear I might bend it in the process. It looks like the MK3 ALU-Heatbed Dual Power frm the reprap Wiki, except it's 220x220mm.
If I can get the glass off without damaging the Heatbed I could also attach a magnetic PEI Plate to that, not sure if that thin alu plate is a good backing in that case.
It might come loose if you heat the heat bed. At least soften enough to pry it off. The other option would be to finish breaking the glass. Then you could use acetone, or something to remove the glue.
I did exactly that to my i3 Mega to attach the magnetic plate directly to the heat plate. I indeed bend the whole thing in the process, fortunately though I was able to fix it (Z-Probe reports a maximum difference of 0.37 now). Don't recommend though.
The industrial-grade glue they used is an absolute nightmare. If you choose to go that route definitely get yourself a proper heatgun as well as acetone, a spatula and some safety mask (for the acetone fumes). If you got an oven for tinkering perhaps heating the whole thing up to weaken the glue.
Leaving the glass plate where it is and putting something new on top definitely is way easier. Not sure I'd do this a second time myself (probably not).
I might be "lucky" in the sense that the glass appears to already separate at the corners.
Does the magnetic plate warp much under high heat loads? Since I print a lot with PET(G) and sometimes ABS I thought this might be a problem.
If I leave the glass on I might not get to the Maximum temperature, but I ordered some moderately priced magnetic kit already, so I'll just clip this on top and Test first.
The magnetic plate indeed warps, not due to heat though but the material on it warping. I saw that on both the i3 Mega as well as a Prusa MK4S with PETG and ABS. Printing big solid objects close to a corner would cause the corner to be lifted up, as the warping of the object is often times stronger than the magnetic plates. Probably gives you an idea of how much force a glass plate has to withstand, especially with badly warping materials like ABS. You can counter this issue with some strong clamps. Doesn't happen on most prints anyway, only on really large and solid ones. The magnetic adhesion in the center is strong enough for anything.
I just removed the Glass plate, not really a big job in my case.
Almost all of the glue stayed on the Glass and the remaining glue was very easy to clean with Acetone.