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PLA won't stick to the bed  

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christopher.l19
(@christopher-l19)
New Member
PLA won't stick to the bed

So my prints have stopped sticking to my PEI sheet. I've used the roll the printer came with, printed fine. The first roll I bought, printed fine, and then the second roll (same color and make) started to fail. Then I switched to white and literally every print failed. I've just got back to my second roll of grey and its marginally better but still not sticking.

I've used alcohol to clean it to no avail and i've just tried acetone too, which doesnt seem to have helped either.

Any thoughts ? I'd like to avoid hairspray and glue (its why I got a PEI sheet in the first place, and I never needed it for the first 2km of printing, so I dont see whats changed....

Posted : 15/06/2018 10:02 pm
Dave J
(@dave-j)
Trusted Member
Re: PLA won't stick to the bed

After 2km of filament, it may be worth re-doing the 'Live Z' calibration. Try going a bit more negative on the Live Z and see if the parts start to stick better. I have found that most filaments are ok around the original Live Z setting, but occasionally a filament will stick better at a lower, and very occasionally higher setting.

Cheers,Dave Jackson"Enthralled Nooby (not so much maybe, ~58 years old)... If 3d printers had been around 40 years ago... "

Posted : 16/06/2018 10:34 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: PLA won't stick to the bed

Hi Christopher,

try giving your PEI sheet a really good cleaning with some dish washing detergent, and water solution, and wipe it dry with clean paper towels.
cross your fingers and try again...

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

Posted : 16/06/2018 10:47 pm
rob.l6
(@rob-l6)
Honorable Member
Re: PLA won't stick to the bed

Also, if you haven't already, consider replacing the nozzle.

Posted : 17/06/2018 5:09 am
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