First layer ends curl  

Re: First layer ends curl

-0.380 seems to be too high Z level.
Test with -0,450 or more. Your first layer should be tight without slits and the surface should be glossy, not matt.

Re: First layer ends curl

Hey Experts,

I am having major issues with my first layer.
I have printed a large 100x100 test square and thought i dialed in my live-z to -0.380.
But when i start a normal print, the ends of the first layer lines go bananas. I tweaked the live Z-Adjust up and down, but nothing seems to help.
I changed the first layer speed down to 25mm/s
I'm printing Prusa PETG at 250C
Multiplier at 1

Can anyone tell me what i need to do?

the best prep for your bed is to wash it with warm water and dawn dish soap (in the UK use Fairy liquid) by using a wad of clean kitchen paper towel dampen with warm water and put a dollop of Dawn on the pad and scrub (i do it twice at 90 deg to each other holding the plate by the edge as it is a phonograph record rinse under running water and dry with clean paper towel keep touching only by the edge... I do this every other day of printing with both kinds of plate.

then set your live z with this method https://shop.prusa3d.com/forum/assembly-and-first-prints-troubleshooting-f62/life-adjust-z-my-way-t2981.html it is far better than the zig zag method in the firmware

Re: First layer ends curl

I do clean my beds properly by washing with mild dish soap and after that with IPA.
The bed is not glossy because i use Magigoo as bed adhesion.

I did print the 75x75 before and it looked best at -380 but as soon as i start firing up normal prints -380 seems to high.
I will print mroe 75x75 en change the setting half way. sound like a good idea.

I did ending up getting better results after using a brim instead of a raft and slowing the first layer down to 25mm/s

Re: First layer ends curl

Can you show us a photo of your 75x75 first layer?