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submitted 3 days ago* (last edited 3 days ago) by [email protected] to c/[email protected]

I was printing some ABS on my modified Anycubic I3 Mega overnight, when I awoke to this horror of a destroyed glass print bed...

Now the question remains, how to actually fix this? One part is still firmly attached to the Bed and I fear this may destroy the Bed even more.

And I obviously need a new Print bed, but I can't find the exact replacement, so should I even get a replacement Ultrabase? I saw that there are magnetic PEI beds available, but I am unsure if it is worth the 80-100€ for this.

Edit: Since the glass is glued to the 1.5mm aluminium heater PCB (and I already had to resolder the broken off wires once) I was looking at complete replacements at first, which why the price is relatively high

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[-] [email protected] 4 points 3 days ago

Absolute worst case scenario if you are unable to get a replacement, you can get a pane of glass and either score and cut it yourself (diamond or silicon carbine and a ruler to score, and then either a drop of water on the score lines and snap or put a bit of string soaked in lighter fluid and set it on fire on the score line, once it's heated dip it in cold water or pour cold water on and it should split along the score).

Use youtube to actually see how it's done.

Or go to a window maker (or if your hardware stores do it) and ask if they can just cut a pane to size for you.

[-] [email protected] 2 points 3 days ago

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

[-] [email protected] 6 points 3 days ago

I'm assuming glass printer beds are supposed to be tempered, and just an FYI for you or anyone else attempting the hardware store or score-it-yourself method, the glass you wind up with will not be tempered and will also have exceedingly sharp edges and corners. If you have access to a belt sander with a suitably fine belt you can at least round off the sharp bits.

Untempered glass probably won't deal with thermal loading very well, either. It might work, and it'll be cheap, but prepare for disappointment.

this post was submitted on 10 Jul 2025
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