Layer adhesion issues

[4ndre]

Hi everyone,

i noticed that if i print 1 object everything is fine, but as soon as i print more like in the pictures i get layer adhesion issues.

Is use Polymaker Poly Tera Fossil PLA Grey on a PEI Sheet and tryed 0.16 mm and 0.20 mm Layer Height.
I tryed a Generic Profile etc.

How can i fix this, i mean common its PLA.

Attempt 1

Attempt 2

[Avgils]

Make sure the build plate is clean.

[4ndre]

I used 99% IPA to clean it.

[JonRaymond]

I would suggest trying dish soap and warm water. I seem to have better overall success with this combination. IPA does work but it can be hit or miss if you’re just wiping the plate as it will spread contaminants/oils out and not remove them. Ideally you want to lift oils but also rinse them off.

[fabien]

Honestly you’re going to have a hard time getting consistent results with this design.

Chances are that printing a single object reduce the cooling time and thus the warping, but the thin lines are inherently prone to warping so you can expect failures.

Things you can try:

• If you can change the design, try adding a line around the fingers on the first layer to help them stick to the plate, and remove that line in post processing
• If you have a smooth plate (not the textured one) use that instead, it will improve the first layer adhesion.
• If dimensional accuracy is not an issue, you can reduce the elephant foot compensation to get a little more squish on your first layer. Don’t do that if you’re using a smooth plate though.

[4ndre]

I cleaned the Bad again intens with dish soap, and added a brim with 0 mm distance to the Object.
Back in the days that work on my chinese printers, so it should work here to.
This is the Model i try to print:

Engine Model 005 by Bambu Lab

[fabien]

If using a brim is acceptable then yes it’s certainly your best option. It’s going to be a nightmare to remove around all these small fingers, good luck!

[4ndre]

So far so good.
I printed it with a brim + tree Support below because the surface is bigger and therefore the layer adhesion to the bed.
I also downloaded Orca Slicer portable the latest and greatest version with beta support for the A1 Mini.
I sliced so far only that plate, but something how it slices and how the printhead moves is different to Bambustudio.
I think i gonna stick with the Orca Slicer for now.

[Level23]

@4ndre, I’ve had the same issue when printing multiple parts on the X1C. This problem is independent from material selection as far as I can tell. I’ve had best results using the cool plate with glue. Honestly, I know we all dread having to resort to the glue, but it works and it exists in the 3D printing world for a reason. Best setup so far has been:

1. Cool plate
2. Use the glue!
3. Use a brim (at the very least outside of part) of at least 5mm.
4. Tree support on organic shapes, standard supports on inorganic shapes.
5. Keep parts as close as you can so that the brims overlap and create a larger footprint.
6. If you are looking at prints over 2 hours, consider printing one part at a time to minimize risk of failed prints.

[pepsala]

I would reduce the speed of the first layer quite a bit (for example to 50). I would increase the temperature of the bed to 70°

[hobbyist]

I usually print on an Ultimaker 2+ and had endless problems with adhesion (glass plate). Especially with Extrudr Greentec filament. Since I’ve been using a Filaprint plate (FilaPrint® — Filafarm), this is history. On the contrary, I have to put the plate in the freezer from time to time to release the print.
I currently only print PLA on the A1M with PEI plate and have no problems.