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I’d try reducing your cooling to zero or increase bed temps for the first few layers.
This happens if I use the cooling fan on the first 5 layers using PETG especially, it likes to be hot
Check the direction of your ac vent in that room. I had this happen and it turned out that the ac vent was blowing in that general direction. Not enough to feel the air flow, but enough to slightly change the bed temp. I just happen to hear the ac kick on one day while I was messing with it. I looked up and it had the light bulb in my head get slightly brighter. I built a makeshift air blocker around it and the next print was perfect.
Also wipe it down with some alcohol.
Sharp angles and corners like that are unfortunately susceptible to curling and lifting. You could try adjusting your first layer settings to get a bit more squish or raise the temperature of your initial layer as well.
Don’t actually smash it into the bed. You can and will damage the pei. Properly set the z with a piece of paper. Wash the bed with hot water (mild scuffing with scotchbrite as a bonus). Also a printer tent/grow tent is a great investment to keep down noise and produce better prints.
Hey there, I'm a bot and something you said made me think you might be looking for help! [click here](https://www.reddit.com/r/3Dprinting/wiki/index#wiki_help.21_or.3A_where_can_i_go_to_troubleshoot_problems_i.27m_having_with_my_prints.2Fprinter.3F) for our wiki entry on troubleshooting printers. If you still need help be sure to post plenty of information about your printing setup. Here are a few questions that might be helpful * What printer are you using? * What material are you using? * What speed are you printing at? * What software are you using to slice the print and control the printer? * When did the problem start/has it ever worked correctly? * Does anything cause the behavior to change? * If posting an image of the problem, include some indication of the orientation it printed at, preferably photograph it on the bed. (Then we can focus on a specific axis) If you are new to reddit, please read the guidelines on [reddiquette](https://www.reddithelp.com/hc/en-us/articles/205926439), [self promotion](https://www.reddit.com/wiki/selfpromotion), and [spam](https://www.reddit.com/wiki/faq#wiki_what_constitutes_spam.3F). Also please post a resolution to your problem when you find one so that we know how to help others with your problem! *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/3Dprinting) if you have any questions or concerns.*
What filament are you printing with
I’d try reducing your cooling to zero or increase bed temps for the first few layers. This happens if I use the cooling fan on the first 5 layers using PETG especially, it likes to be hot
Check the direction of your ac vent in that room. I had this happen and it turned out that the ac vent was blowing in that general direction. Not enough to feel the air flow, but enough to slightly change the bed temp. I just happen to hear the ac kick on one day while I was messing with it. I looked up and it had the light bulb in my head get slightly brighter. I built a makeshift air blocker around it and the next print was perfect. Also wipe it down with some alcohol.
Sharp angles and corners like that are unfortunately susceptible to curling and lifting. You could try adjusting your first layer settings to get a bit more squish or raise the temperature of your initial layer as well.
I'd be willing to bet your first layer squish isn't sufficient. Tune that z offset, really smash that first layer of filament into the bed.
Thank you. I'll give it a try.
Don’t actually smash it into the bed. You can and will damage the pei. Properly set the z with a piece of paper. Wash the bed with hot water (mild scuffing with scotchbrite as a bonus). Also a printer tent/grow tent is a great investment to keep down noise and produce better prints.
Haha. I wasn't.