travisb6989
Posts: 1
Joined: Sat Nov 23, 2019 8:29 am

Print is lifting

Sat Nov 23, 2019 8:34 am

Hello all,

I am a new 3D printer user and having some difficulty with my prints lifting off the bed. I have a Ender 5 running th3D firmware with a auto leveling kit. The problem I am having is after the first few layers the print lifts on the corners.

I am printing using PETG and have tried nozzle temps ranging from 235 to 250 (suggested mfg temp). The bed is off and I am printing on blue painters tape with some glue stick as I have read that can be helpful with PETG. The problem is don't know what aspects causes the lifting so I am not sure what to adjust.

Anyone have some advice?

User avatar
dkightley
Posts: 2095
Joined: Tue Mar 10, 2015 4:09 pm

Re: Print is lifting

Mon Nov 25, 2019 9:51 am

To improve the first layer adhesion, there are a few things to try......and as you've given no idea what your current settings are, I'll just give general advice...

1 - thicken up and slow down your first layer
2 - Adjust the Global-Z field value in a negative direction by 0.1mm at at time to force the first layer into the bed better
3 - Consider using "mouse ears" on persistently lifting corners, etc
4 - Not 100% sure about PETG, but I think it needs bed heating....75 degrees aparently
Doug Kightley
Volunteer at the National Tramway Museum http://www.tramway.co.uk
Railway modeller and webmaster at http://www.talkingtgauge.net

TheBum
Posts: 107
Joined: Fri May 18, 2018 11:13 pm

Re: Print is lifting

Mon Nov 25, 2019 11:02 am

I print PETG with a bed temperature of 85. I also put down a layer of Elmer's glue stick (the purple stuff that turns clear when it dries), which not only helps prevent lifting but also acts as a release agent when the print is done. When I was printing on a bed sheet, I used glue there also to help with adhesion.

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