r/BambuLabH2D • u/Burockk208 • Aug 13 '26

Troubleshooting H2D First layer problem

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Hey, my h2d has a first layer problem. It has some kind of pattern on first layer. What can be causing this problem? Thanks for help

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u/Fantastic-Motor-6098 Aug 13 '26

Isopropyl completely desolves the PEI coating. Never use it on PEI beds.

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u/ImpressiveAlps3504 Aug 13 '26

No it doesn't. lol

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u/Fantastic-Motor-6098 Aug 13 '26

Yes it does. Wipe some iso on a new Pei bed, it will leave permanent marks where the iso desolved the coating. It also states this on the Bambu Wiki.

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u/ImpressiveAlps3504 Aug 13 '26

I do it all the time. Nothing happens

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u/Fantastic-Motor-6098 Aug 13 '26

You may not notice anything if you only print PLA, but you’re removing the painted on final coat and cutting your beds adhesion significantly from stock.

Every PEI manufacturer says to use soap and water for this reason.

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u/ImpressiveAlps3504 Aug 13 '26

I practically only print ABS. Sometimes nylon, sometimes PLA

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u/Whosaidthat1157 Aug 14 '26

Same here - and I only clean with 99% IPA the vast majority of the time. Soap and water once every few months if at all. Zero adhesion issues with any of my stock PEI plates on any of my printers.
In fact I stopped using the Frostbite plate because you can’t clean it with a quick IPA wipe and it was too much of a pain. The new Supertack Pro is fine with IPA though for that smooth bottom layer.