Going by just the failed circular print, you definitely don’t have a good Z offset. There’s no smoosh there. Putting it lower will smoosh the filament into the print bed (Part of why the PEI sheet is textured. The filament smooshed in the texture helps hold it better than a flat print bed). The fact that you can see through your first layer is bad.
The top layers of your other failed prints look good, so I say we can rule out under/over-extrusion.
I agree with this. OPs adhesion is almost non existant, printed model being dragged around with nozzle.
Get nozzle much closer to print bed. Print the first layer slowly with no fan, stop and repeat until its perfect, then continue with 2nd layer. There shouldnt be any gaps between lines (too far), but surface should be smooth with no ridges (too close)
Printing the 1st layer slow is so important, forgot about that! I’m down to 25mm/s on my first layer. Nice and slow. A print with a large surface area (Like a sign) may take 15 minutes on the 1st layer, but it’s definitely worth it.
This was the final key, just bringing it WAY closer to the build plate. My first test print turned out much betterImage I see what you mean by smoosh being missing.
Lowering the Z Offset, Cleaning the build plate, using “fresher” filament, adding a brim support layer, and checking the nozle for built up filament seems to be the checklist to follow.
Appriciate the help, Lemmy was a last resort. Hopefully someone else can stumble upon this thread if they’re having issues.
Spent time printing last night and I was able to get a first layer that looked extremely similar to this. Was able to successfully print some smaller things (1 hour print time max). Scared to test a longer print honestly, mostly because if it still doesn’t work I’m just at a loss.
Side note, that red is super vibrant looking. Gonna grab some now lmao.
MrQuallzin@lemmy.world 2 months ago
Going by just the failed circular print, you definitely don’t have a good Z offset. There’s no smoosh there. Putting it lower will smoosh the filament into the print bed (Part of why the PEI sheet is textured. The filament smooshed in the texture helps hold it better than a flat print bed). The fact that you can see through your first layer is bad.
The top layers of your other failed prints look good, so I say we can rule out under/over-extrusion.
rambos@lemm.ee 2 months ago
I agree with this. OPs adhesion is almost non existant, printed model being dragged around with nozzle.
Get nozzle much closer to print bed. Print the first layer slowly with no fan, stop and repeat until its perfect, then continue with 2nd layer. There shouldnt be any gaps between lines (too far), but surface should be smooth with no ridges (too close)
Image
Image
There are some other tricks to improve adhesion even more, but first layer should be fixed first
MrQuallzin@lemmy.world 2 months ago
Printing the 1st layer slow is so important, forgot about that! I’m down to 25mm/s on my first layer. Nice and slow. A print with a large surface area (Like a sign) may take 15 minutes on the 1st layer, but it’s definitely worth it.
TheBest@midwest.social 2 months ago
This was the final key, just bringing it WAY closer to the build plate. My first test print turned out much betterImage I see what you mean by smoosh being missing.
Lowering the Z Offset, Cleaning the build plate, using “fresher” filament, adding a brim support layer, and checking the nozle for built up filament seems to be the checklist to follow.
Appriciate the help, Lemmy was a last resort. Hopefully someone else can stumble upon this thread if they’re having issues.
MrQuallzin@lemmy.world 2 months ago
If that’s the 1st layer we’re looking at, you can get even closer. You want all those lines to be merged with each other.
MrQuallzin@lemmy.world 2 months ago
Just ran a disk like yours as comparison. You have to look pretty close to see the individual lines! Image
TheBest@midwest.social 2 months ago
Spent time printing last night and I was able to get a first layer that looked extremely similar to this. Was able to successfully print some smaller things (1 hour print time max). Scared to test a longer print honestly, mostly because if it still doesn’t work I’m just at a loss.
Side note, that red is super vibrant looking. Gonna grab some now lmao.