It might work, but you generally want to have a flat surface and it needs to stand up to extended periods of temps up to 110°C and I’m pretty sure this is borosilicate glass
But I also can’t get the glass shards off the printed parts, so this is pretty much a moot point
I’ve managed to get the rest of the sprint loose, sadly it was already damaged beneath. 
Since it looks like the glass bee is already lifting by the corners from the heat bed I bet I can remove it pretty easily, but if the bare heater PCB (1.5mm thick) makes a good surface for a magnetic bed I don’t know…
That was my idea, as well, but the Glass is glued to the heater, though I have seen a video that shows its possible to remove the glass.
But then the thin aluminum heater seems so flexible, I am not sure if a flexible PEI sheet on top of that would work well…
To be fair the PEI kit I was looking at is a aluminium baseplate, silicone heater mat, magnetic base & the PEI sheet, so basically a complete replacement of the bed.
since the glass is glued to the heater I was looking at a complete replacement at first.
That sounds like an option. It looks like the aliminum heater is quite thin, I estimate 1-1.5mm, so unlikely to be a good suface to mount a flexible sheet to?
Thanks, I guess that could be an option. I would just have to find a way how to seperate the heater PCB from the existing glass, it does appear to be glued to it quite strongly
Well I don’t have any way to mount the PEI bed? This is a glas bed with the heater glued to it, and the mounting screws are integrated into the heater. So I would need to find a way to either seperate the glass from the heating PCB or somhow mount the new bed on top of the exisiting one.
Unless there are cheaper compatbile option I did not find. It is quite hard to find something for this specific printer
Yes that was my idea, I already ordered a magnetic plate kit today and I can try this out first. Since the heater is an aluminum PCB directly glued to the glass I might just try to separate the glass from the PCB if the glass if sticking it on top doesn’t work out like I wanted