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First layer looks a little odd lately  

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io7m
 io7m
(@io7m)
Active Member
First layer looks a little odd lately

Hello!

I recently decided to re-run both the temperature calibration and the first layer calibration as I moved the printer into an enclosure and switched out the nozzle for an E3D Nozzle X. My results for the first layer calibration seem fine (`-0.880mm`), but upon printing the first layer of the Prusa logo, I'm unsure if this is a good result or not.

It looks a little odd to me. Rough around the edges. Is the nozzle too high? Not enough pressure?

 

Posted : 07/11/2020 9:44 am
io7m
 io7m
(@io7m)
Active Member
Topic starter answered:
RE: First layer looks a little odd lately

I'm seeing less-than-stellar bed adhesion there too.

Posted : 07/11/2020 9:45 am
Peter M
(@peter-m)
Noble Member
RE: First layer looks a little odd lately

After moving a printer, you need to run the z-calibration.

Here is a movie how to do first layer calibration, you are to high, there are gabs in your first layer,  + possible bed is not clean.

 

Clean bed with dish soap, and make first layer calibration good, then it should work again.

Posted : 07/11/2020 1:26 pm
Peter M
(@peter-m)
Noble Member
RE: First layer looks a little odd lately

And E3D Nozzle X, possible you need to print hotter, search the forum for how much more heat the nozzle needs.

Posted : 07/11/2020 1:28 pm
io7m
 io7m
(@io7m)
Active Member
Topic starter answered:
RE: First layer looks a little odd lately

Thanks, that video helped. The nozzle was too high, as you said. I printed the calibration test from that video, adjusting the live Z as it went: The sweet spot for me appears to be -1.0mm. That calibration print is far better than the calibration test that's built into the firmware!

 

Posted : 07/11/2020 3:06 pm
io7m
 io7m
(@io7m)
Active Member
Topic starter answered:
RE: First layer looks a little odd lately

Actually, it got a little better at -1.020...

Might re-align the P.I.N.D.A probe at some point to get that value closer to zero, but it's fine for now.

Posted : 07/11/2020 3:31 pm
Neophyl
(@neophyl)
Famed Member
RE: First layer looks a little odd lately

You don’t want the live z zero, as that would mean the pinda probe is at the same height as the nozzle, which would mean to would be hitting the print. Around -800 to -1200 is perfectly fine as that’s around .8-1.2mm up. I’d say you are nicely in the middle spot. 

Posted : 07/11/2020 3:36 pm
io7m
 io7m
(@io7m)
Active Member
Topic starter answered:
RE: First layer looks a little odd lately

Got it! 👍 

Posted : 07/11/2020 3:50 pm
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