What are printing paraleters for firmware first layer calibration?
 
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What are printing paraleters for firmware first layer calibration?  

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Pedja
(@pedja)
Trusted Member
What are printing paraleters for firmware first layer calibration?

When I do First layer calibration I get nice print. Everything seems fine. Filament sticks to the plate nicely.

But when I run some print it ends up horrible. Filament does not stick.

I use all default values in PrusaSlicer with intention to tweak them to get solid prints. Problem is I do not know what to tweak.

How can I find out what parameters are used to generate First layer calibration print firmware so I can match them?

Posted : 17/09/2022 10:46 am
Diem
 Diem
(@diem)
Famed Member

Please run a first layer Z calibration and show us the resulting print *on the print sheet*.

Cheerio,

Posted : 17/09/2022 11:50 am
Pedja
(@pedja)
Trusted Member
Topic starter answered:
RE: What are printing paraleters for firmware first layer calibration?

I have no issue with first layer calibration. It works very nice and calibration print is good in every sense.

Problem is when I do any print it does not stick to the plate. I would like to set PrusaSlicer to have the same print quality as in First layer calibration.

 

Posted : 17/09/2022 12:33 pm
Diem
 Diem
(@diem)
Famed Member

Humour us: run a first layer Z calibration and show us the resulting print *on the print sheet*.

Cheerio,

Posted : 17/09/2022 11:58 pm
jsw liked
jsw
 jsw
(@jsw)
Famed Member
RE: What are printing paraleters for firmware first layer calibration?

Yes, and you might also please show us a photo of the underside of the 'flag' portion of the test calibration print, something like this:

 

Posted : 18/09/2022 2:24 am
Pedja
(@pedja)
Trusted Member
Topic starter answered:
RE: What are printing paraleters for firmware first layer calibration?

Posted : 18/09/2022 5:39 pm
Diem
 Diem
(@diem)
Famed Member

I would have liked to see more of the zigzag but it seems the layer is reasonable, it could probably go a fraction lower, don't sweat it.

There are signs your filament is damp, this has been a huge problem recently, dry it.  Then the next step is to give your print-sheet a really thorough clean, look up threads here...

Your calibration settings are automatically stored, there is no need to apply them, it is done for you.

Cheerio,

Posted : 19/09/2022 1:57 am
Pedja
(@pedja)
Trusted Member
Topic starter answered:
RE: What are printing paraleters for firmware first layer calibration?

This is newly open filament. However this issue happens with other filaments too. Drying did not make a difference.

As I sad, First layer calibration print is good. Problem is when I print something sliced in PrusaSlicer. Then it does not stick so well.

Something is different in printing parameters PruseSlicer applies. I can make it work OK when I cut First layer speed from default 20 mm/s to 10mm/s but that is noticeably slower than how firmware prints calibration pattern.

Posted : 19/09/2022 5:50 am
Diem
 Diem
(@diem)
Famed Member

Make certain the build sheet is absolutely clean.

Cheerio,

Posted : 19/09/2022 6:10 am
Pedja
(@pedja)
Trusted Member
Topic starter answered:
RE: What are printing paraleters for firmware first layer calibration?

 

Posted by: @diem

Make certain the build sheet is absolutely clean.

Cheerio,

Have you actually read what I posted? Your suggestions seem totally irrelevant to issue I am talking about.

Posted : 19/09/2022 10:17 am
hli
 hli
(@hli)
Trusted Member
RE: What are printing paraleters for firmware first layer calibration?

Follow https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/ (you can also create your own print with 0.2mm height). That way you can actually test your slicer settings and check how the first layer turns out. Might be speed, might be temperature, might be the actual Z offset, might be the sheet cleanliness (from my experience usually its the latter - even when the Z calibration seems fine larger print will not stick with an unclean sheet).

Posted : 19/09/2022 1:53 pm
Diem
 Diem
(@diem)
Famed Member

Have you actually read what I posted?

Yes.  Clean the build sheet.

Cheerio,

Posted : 19/09/2022 3:22 pm
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