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this post was submitted on 18 Aug 2023
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Saying all surfaces are equal is wrong. Using PEI sheet with PETG or TPU (and no glue) is a nice way to destroy it.
I read about this so many times but I've printed with PETG a lot on both glass and PEI and never come close to experiencing this.
Lucky you, I was too lazy to read and ruined a brand new sheet the first time I was printing PETG.
Same with glass, I ruined a few with PETG.
Why would you use a glass bed in 2023?
Clean glass is best for pla imo. Also its flat. You need flat bed to avoid auto bed leveling and tooling plates are expensive. I know most peeps here disagree with me hehe
My stock Ender 5 print plate is super flat and I don't need any auto bed leveling.
The print plate of my Tronxy X8, which I had before, was also super flat.
With spring steel PC, I need no surface treatment before printing PLA, PETG or TPU. It sticks perfectly every time and it comes off easily after cooling down.
No glue strick, hairspray, tape or other stuff that belongs in the 2010s needed.
It's very flat, it works well with PLA, and it's what my ultimaker 2 came with.
For a 10 year old machine that makes sense. But honestly, get your self a buildtak clone surface and stick it onto your glass board.
You won't be going back to the glass, I promise you.
Costs maybe €10, takes 2 minutes to install and you won't ever have to mess with glue stick, hairspray or any other surface treatment.