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Floyd
(@floyd-2)
Membre
PETG print stuck

I haven't done any print for a long time, due to health problems. I'm better now so I thought I would print a couple of things. Sadly I had forgotten the basics, so I printed with PETG on the smooth PEI sheet, and now it is stuck. I should have wiped it down with Windex of course, but I didn't. The print failed anyway, but I can't get it off. Is there any solvent that'll do the job? or should I use a heat gun? I hesitate to use any sharp tools for fear of ruining the PEI sheet
Any help would be much appreciated

Kurt

 

Publié : 11/11/2023 9:20 pm
3Delight
(@3delight)
Modérateur Moderator
RE: PETG print stuck

I hope someone can help you with this as from what I've read online it is a nightmare  to separate without damaging the PEI covering on the sheet.  Some suggestions I've read include:

1) Putting it in a freezer for several hours then flexing the steel sheet.

2) Heating the bed up to around 100°C and again flexing it.

3) Slowly working around the join with a very sharp blade like a scalpel.

The lesson here really is always use a release agent with PETG on PEI... Or use a satin or textured plate.  Sorry I can't be of more help!

Publié : 11/11/2023 9:38 pm
Floyd
(@floyd-2)
Membre
Topic starter answered:
RE: PETG print stuck

@3Delight
Thanks for trying to help. The freezer trick sadly didn't help. Trying other ways I managed to ruin the coating, so it's for the bin. Fortunately, I've got a textured build plate too.
Cheers
Kurt

Publié : 13/11/2023 9:45 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: PETG print stuck

try dribbling Isopropyl Alcohol, on the build plate, around the model, let it sit a while, then re try removing the model.

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Publié : 13/11/2023 10:17 am
Dante
(@dante-3)
Eminent Member
RE: PETG print stuck

Might be a little late to the party, but I have found that heating the build plate to 90 - 100 C softens it up and will usually allow the part to release.  I had this issue early on and do not like to print PETG on PEI after that.  I always use the textured plate now.

Publié : 13/11/2023 7:42 pm
Floyd
(@floyd-2)
Membre
Topic starter answered:
RE: PETG print stuck

@Joan
Sorry, that didn't quit do it either

@Dante
3Delight mentioned that above, didn't work. Maybe I should leave it to stew for a little longer.

Anyway, as I said earlier, I managed to ruin the PEI plate along the way, but I tested your suggestions nonetheless hoping it might be of use to somebody else.
Thank you for your efforts.
Cheers
Kurt

Publié : 13/11/2023 9:26 pm
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