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First layer problem after firmware update 3.11.0  

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Ratthy
(@ratthy)
Eminent Member
First layer problem after firmware update 3.11.0

For a few years, I was printing correctly without any trouble. Now I have trouble with my first layer. 
This image is from a old print that I have made last year. 

after that I have made the update to 3.11.0, I have started to have problem, the PLA was not sticking on the print plate at some place. I have made some deep cleaning of my plate, and same thing. 
i have redefined my first layer, and I have finally made a print, but the first layer have this strange pattern. 

i have try a small print, and adjusted the first layer, lowering it a bit. 
‘now the first layer is better, but my top layer is textured. 

after seeing this, I have check my previous box, and in the bottom is not strait (thin wall without infill). 

I’m not sure what to check next. If I check my first box printed, if I check the edge, I think my first layer is ok, maybe a bit low, but the center seem too high. I have print a box and his cover in the same time, and all the edge is ok, but only the center of the print that seem too high. 

Postato : 19/09/2022 11:35 pm
Diem
 Diem
(@diem)
Illustrious Member

Your first layer is calibrated too low, raise it until the patterns *just* disappear.

Top layer patterns similar to this are sometimes a symptom of damp filament.

Cheerio,

Postato : 20/09/2022 12:39 am
Ratthy
(@ratthy)
Eminent Member
Topic starter answered:
RE: First layer problem after firmware update 3.11.0

On my last print, this is what I was thinking, this was a try to remove my wave on the previous print. Even on this one I think my print is too low, but if I go up, it does not stick on the plate at some place. 

Postato : 20/09/2022 9:23 am
Diem
 Diem
(@diem)
Illustrious Member

Look up threads here about cleaning the build plate.

Cheerio,

Postato : 20/09/2022 11:22 am
Ratthy
(@ratthy)
Eminent Member
Topic starter answered:
RE: First layer problem after firmware update 3.11.0

I have wash the plate with dish soap, and with isopropanol. 
but this will not give me wave in my first print. I have this wave all the time in my first layer. 

Postato : 20/09/2022 8:12 pm
Diem
 Diem
(@diem)
Illustrious Member

Your first layer is calibrated too low, raise it until the patterns *just* disappear.

Cheerio,

Postato : 20/09/2022 11:33 pm
Ratthy
(@ratthy)
Eminent Member
Topic starter answered:
RE: First layer problem after firmware update 3.11.0

I will try, not sure this will work, because when I have some problem with the adhesion, the wave pattern was also present. Maybe the adhesion problem was due to this patterns. 

But I found strange that this have started after the firmware update. 

I will also check if I have the same trouble with an other color. I have change my PLA lately, but I will find it strange, I have finish 2 roll of this company without any problem. I still have some roll from my previous supplier. 

Postato : 21/09/2022 10:04 am
Ratthy
(@ratthy)
Eminent Member
Topic starter answered:
RE: First layer problem after firmware update 3.11.0

Finally, with many test this morning, I have almost a perfect first layer. 

you was almost correct, I was too low. But also, I have always print with the default temperature, now I have to reduce my print temperature by 20 degrees. 

now trying with TPU if I have to change also my setting. 

Postato : 25/09/2022 5:42 pm
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