Sourced a PEI sheet for my bed,

3D Printing
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Sourced a PEI sheet for my bed, printing Lulzbot ABS @ 245C onto the bed @ 85C with no brim, 100C with no brim and then 85C with a brim.

It’s very good, I think this will let me lower my ABS print temps. Parts just snap off when the bed is cool. Next up try PLA.

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Only the first peeled up at all.

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Also I need to change my starting and ending G-code, if you plug the nozzle on the bed while heating up it will melt a little spot on PEI, which melts at about 190C.

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OOoo, glad you mentioned that - I’ll make sure to stop doing that!

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@Bracken_Dawson ​ yeah that’s one thing I never remember to change either until it hits the bed and starts heating. I usually like my bed temps a little higher than what you have them there, though.

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Try wet sanding the surface of the PEI with 400 grit sandpaper until it is uniformly matte. That should let you drop the bed temp even more, give better hold during printing and retain the easy removal when the bed is cool.

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Make sure that your bed is very clean. Using acetone will leave a film that will cause lifting. I use 90% isopropyl alcohol and print abs @ 105-110 with almost no lifting or issues.

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I’ve never had to put anything down on the bed at all nor use sandpaper. If you’re careful not to leave a lot of oil from your fingers, it works reliably

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Where did you get yours from?

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I operate a CEL Robox which comes standard with a PEI print surface on a heated aluminum bed.

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@Ben_Hudson I was really just looking for the PEI piece…

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amazon is the easiest. Youll need double sided adhesive sheet too.

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@Joe_Spanier which adhesive sheet from Amazon did you buy? Do you have a link? Is your build platform removable?

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@Ben_Hudson my sheet (the one from Amazon US has a glossy side and a matte side, I print on the matte side. I used the 3M self adhesive sheet to stick it down.

@Joe_Spanier You need purer acetone, but never use acetone on your PEI bed, it will reduce it’s life. I don’t find that I need it to be spotlessly clean at all, it really is very good.

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It’s more just can’t have oils on it. I’ve cleaned mine about 2 times in 4 months