this post was submitted on 05 Sep 2025
67 points (98.6% liked)

3DPrinting

19624 readers
208 users here now

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.

The r/functionalprint community is now located at: or !functionalprint@fedia.io

There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml

Rules

If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)

Moderation policy: Light, mostly invisible

founded 2 years ago
MODERATORS
andypiper@lemmy.world
j4k3@lemmy.world
GrayBackgroundMusic@lemmy.zip
67
Adhered so hard it delaminated the glass. (sh.itjust.works)
submitted 3 days ago by hereiamagain@sh.itjust.works to c/3dprinting@lemmy.world
48 comments fedilink hide all child comments
 

I loved this glass bed. After so much time trying to get anything to stick to the stock ender 3 bed, this glass bed has things sticking almost TOO well.

It was fine enough for PLA, but I've been playing with PETG lately and it sticks a little harder.

Well today I printed the entire bed flat for a little hiking table I'm experimenting with.. and this happened when I tried to get it off...

Suggestions for replacement? Should I go glass again? I don't have bltouch so I like how flat glass is, set it and forget it. But I've seen those magnetic plates that allow for super easy removal but just flexing the plate, but this bed is aluminum I think. Plus that seems similar to the stock ender 3 plate that I despise.

top 48 comments
sorted by: hot top controversial new old
[–] FartsWithAnAccent@fedia.io 14 points 2 days ago (1 children)

PETG and bare glass: Name a more iconic duo.

[–] hereiamagain@sh.itjust.works 4 points 2 days ago

Now I know this to be true

[–] HeyLow@lemmy.blahaj.zone 23 points 3 days ago (1 children)

Yeah petg you have to add a sacrificial layer of generally hairspray or glue stick to make sure the petg doesn't bond with the glass

I have several chips in my glass bed from petg

I usually now spray 3-5 layers of hairspray on my glass before printing petg

[–] hereiamagain@sh.itjust.works 6 points 3 days ago (2 children)

That's my fault for jumping in without researching lol.

Now I see why PETG isn't as popular.

I needed something with more heat resistance than ABS but I didn't want to go through the work of making an enclosure

[–] nesc@lemmy.cafe 4 points 2 days ago (1 children)

PETG becomes as easy to print as PLA after 3 or 4 spools to be honest.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

That's encouraging!

[–] aBundleOfFerrets@sh.itjust.works 4 points 3 days ago (1 children)

PETG is typically less heat resistant than ABS

[–] hereiamagain@sh.itjust.works 3 points 3 days ago

I meant PLA sorry

[–] roofuskit@lemmy.world 16 points 2 days ago (1 children)

Knew it was PETG before reading.

[–] hereiamagain@sh.itjust.works 3 points 2 days ago

Somehow I missed all the warning signs and discussion on the subject. I'll never forget.

[–] IMALlama@lemmy.world 5 points 2 days ago (1 children)

That looks like somewhat similar to an ultrabase bed. I have had one of those on my i3 clone for years and years. I've also printed a reasonable amount of PETG on it. Was the print and/or bed warm when you tried to pull it off? Prints detach much better when cool.

[–] hereiamagain@sh.itjust.works 4 points 2 days ago (1 children)

I put the whole apparatus in the fridge for a few hours, hoping it would just pop off.

The edges came up clean, but the very middle was very unhappy. I had some lifting on the corners so I think there was a draft and the plate wasn't warming equally. Hot spot in the middle trying to keep up maybe? IDK.

[–] IMALlama@lemmy.world 3 points 1 day ago (1 children)

Lifting on the corners, especially if this was a bed sized print, was probably due to warping. It stinks that it took out your bed, but warping probably wasn't the cause there.

My main printer these days is enclosed. When I print PETG on it I'll pop the lid open because PETG doesn't like to be too warm.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

I thought too cold caused warping, does too warm cause it as well?

[–] PerogiBoi@lemmy.ca 6 points 3 days ago (1 children)

Textured PEI plate!!! I’ve had a glass plate printer and it was pretty decent but eventually warped and caused most prints to stop sticking as well.

Now I have a textured PEI plate printer and I haven’t had a single issue with bed stickiness. Bonus is I can remove the plate and flex it to pull new prints off of it.

[–] hereiamagain@sh.itjust.works 2 points 3 days ago (2 children)

How do you keep the plate flat to the bed without magnetics?

[–] PerogiBoi@lemmy.ca 3 points 3 days ago (1 children)

It’s magnetic so it snaps on and off. The magnets are quite strong.

[–] hereiamagain@sh.itjust.works 3 points 2 days ago

I googled it, you put down a magnetic sheet first. Sweet, I ordered one

[–] talentedkiwi@sh.itjust.works 2 points 3 days ago (1 children)

Mine has a magnetic layer that adheres to the existing bed. Then the PEI plat sticks to that.

[–] hereiamagain@sh.itjust.works 2 points 2 days ago (1 children)

Awesome! I ordered one, I'll give it a try

[–] talentedkiwi@sh.itjust.works 2 points 2 days ago (1 children)

FYI, I had to compensate on the bed heater to compensate for the extra mass and thickness. I don't remember how much, but not a ton. Plus a little longer of a wait to let the heat saturate before starting the print.

[–] hereiamagain@sh.itjust.works 1 points 2 days ago (1 children)

Can't be much worse than a big hunk of glass?

[–] talentedkiwi@sh.itjust.works 2 points 2 days ago

Nope, but a big hunk of metal (magnet) plate

[–] Kolanaki@pawb.social 4 points 3 days ago* (last edited 3 days ago) (1 children)

I like the silicone type pad I have. I don't remember what it's actually made of but it has great adhesion, can be peeled off the main bed and flexed to pop prints off easy.

[–] hereiamagain@sh.itjust.works 3 points 3 days ago (1 children)

Nice! Could you link it? Very curious.

Also how does it do with PETG? Apparently PEI/PEO doesn't do so well?

[–] Kolanaki@pawb.social 2 points 3 days ago* (last edited 3 days ago)

https://www.amazon.com/Creality-Ultra-Flexible-Removable-3D-235X235MM/dp/B07HNWSMXY

I've personally never used anything other than PLA (and resin) so I'm not sure how it holds up to PETG or other filament types.

[–] n3m37h@sh.itjust.works 4 points 3 days ago* (last edited 3 days ago) (2 children)

There ia your problem, that bed is not ment for PETG, PLA only

You can get cheap PEY, PEO build plates that arw much better for PETG

[–] hereiamagain@sh.itjust.works 1 points 3 days ago

I've never heard of this, wow, that's good to know I guess.

[–] paf@jlai.lu 1 points 3 days ago* (last edited 2 days ago) (1 children)

This or put blue tape on a glass bed ~~if you can't wait for the delivery~~

[–] hereiamagain@sh.itjust.works 1 points 2 days ago (1 children)

This is a pretty deep hole, I don't think tape will cut it.

But I've been printing little things on the front portion 🤷‍♂️

[–] paf@jlai.lu 1 points 2 days ago (1 children)

I'm sorry, i was tired and mixed up things... What I meant is if you have a glass bed (undestroyed), you can use blue tape to print petg. It will help if you want to keep a glass bed to maintain a flat surface unlike others build plate which are more flexible.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

Ah that makes sense haha

[–] cosmicrookie@lemmy.world 3 points 3 days ago (3 children)

I have the same printer and I often need a hammer to loosen the print from the bed!

[–] Thorry@feddit.org 4 points 2 days ago (1 children)

I keep a very sharp scalpel next to my printer. It's super thin and a bit flexible, but still has a sturdy handle to hold on to. With it I can get in between the glass and the PETG no matter how stuck it is. Once I cut a little bit, usually the whole print lifts right away.

[–] hereiamagain@sh.itjust.works 4 points 2 days ago

I do this too, normally it works a treat.

[–] hereiamagain@sh.itjust.works 4 points 3 days ago

I've definitely done that!

[–] Texas_Hangover@lemmy.radio 2 points 2 days ago (2 children)

I know absolutely shit-all about this subject, but is there no kind of release agent y'all can use? Like with molds and such?

[–] _stranger_@lemmy.world 3 points 2 days ago

Many printers come with a thin metal plate that attaches via magnets, which you can bend/flex to help the print detach. Easily my favorite way to get a print off the bed.

[–] cosmicrookie@lemmy.world 2 points 2 days ago

I pour some alcohol around the base and then place them in the fridge or freezer. After half an hour they either release or are easier to release.

The issue is finding space in the fridge or freezer for the larger prints

[–] fluxx@lemmy.world 3 points 3 days ago (1 children)

Just get a few new pieces of glass/mirror cut to the same size. I've been using a piece of mirror for years now. No glue, nothing. Petg all of the time. Works great. Has a few blemishes, but still perfectly flat and very cheap.

[–] hereiamagain@sh.itjust.works 2 points 2 days ago (2 children)

Nice! Yeah I've loved this glass. I might go back to it, but I'm gonna try PEI for awhile 🤷‍♂️

[–] fluxx@lemmy.world 3 points 2 days ago (1 children)

The reason I'm not going for pei or any other spring steel sheet is it isn't flat and warps with temperature. I'd need to compensate for warping and potentially flatten my bed, which all goes away with glass. Additionally, since I'm on ender 5, the weight doesn't matter, so that is what I use. Also, for me petg is better than pla in almost every way i use the printer, I care about creeping and temperature stability, which makes petg the absolute king. But for some other use cases, other stuff makes more sense.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

Hmmm, that doesn't sound very encouraging haha. Well I'm gonna try PEI anyway, see if I can keep it flat enough.

[–] AliasVortex@lemmy.world 3 points 2 days ago (2 children)

Heads up, PEI sheets are great because you can take them off and flex them a bit to pop parts off, but it is worth noting that PETG (and TPU) can also bond too well to PEI. It depends a bit on the kind and quality of the PEI, but you may still want to use a release layer (I'm partial to washable glue sticks, but everyone has their own personal preferences) just to keep your plate safe.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

Good to know, I'll have to play with it.

[–] nesc@lemmy.cafe 2 points 2 days ago (1 children)

If you wait a bit for plate to cool PETG just pops off it most of the time.

[–] hereiamagain@sh.itjust.works 1 points 22 hours ago

That's good to know thanks!

[–] Jake_Farm@sopuli.xyz 2 points 3 days ago

Lol, it looks like someone sat on it and left a butt mark!