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1st Layer Bubbling ??


CoolHanMatt
(@coolhanmatt)
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Love my new printer!

But I get bubbles on the 1st Layer. Not sure why or whats happening. Its not elephants foot. Only happens 1st mm (approx) then prints fine.

PRINTER: Ender 3 Max|
Filament: White PLA 200/60 Stock Everything Settings

Looks to me extruder tip is pushing back through material. IDK.


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CoolHanMatt
(@coolhanmatt)
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Another Pic


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3nderUser
(@3nderuser)
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Are you sure not printing that heat tower from 240 bottom to 180 degrees on top?
What is the use of an heat tower when printing everything the same 200. 


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CoolHanMatt
(@coolhanmatt)
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@3nderuser

I did print the proper temps.

Whats happening is this:
The Nozzle is just bouncing over the print. Its like the Z axis isnt moving at all until about 1mm...Then it prints beautifully.


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3nderUser
(@3nderuser)
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Posted by: @coolhanmatt

@3nderuser

I did print the proper temps.

Whats happening is this:
The Nozzle is just bouncing over the print. Its like the Z axis isnt moving at all until about 1mm...Then it prints beautifully.

Did you check connection between Z stepper and lead screw. Maybe the locking screw came loose?


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CoolHanMatt
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Everything feels tight I dont feel any play in the coupler or the lead screw. 

I did find this article seems to be the exact same problem.

 

Not sure the fix


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Axl Myk
(@axl-myk)
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Try 215º and 60º for a print. 220º first layer. I don't see a lot of use for heat towers. Once you find what works, don't mess with it.

PLA is like warm honey at 240º.


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frankt2012
(@frankt2012)
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@coolhanmatt Did you ever get this fixed? I have had the same problem with two ender 3 max's. The first one I sent back because I thought there was something wrong with it. I can kind of fix the problem if I tighten the lead screw side of the gantry slightly over tightened and the other side i have to keep looser then it should be. But I get a terrible elephants foot. I think it needs a dual z axis. I see that one side of the gantry has a delay in following the other side when abl is running. I think this is cusing the nozzle to be to close on the lead screw side. I guess loosening the non lead screw side helps it follow better but dosen't solve it fully.  


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kevin
(@kevin)
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frankt2012
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@kevin Ok I will try that. I thought I did that though and it got worse. But I will give it a go again. Thank you.


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kevin
(@kevin)
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@frankt2012 You are welcome. Let us know if it works! 😘 


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