Can someone interpret this very first print?  

  RSS
RichardSchreier
(@richardschreier)
Active Member

I am hoping someone can interpret my z-axis calibration from this my very first print.. not sure what to expect, should I see the diagonal lines? should it be smoother? do I need to adjust the z-axis again? i am at -1.1 on the adjustment and am just not sure if i need to go more as i don't know what to expect... thanks!

Posted : 24/04/2021 7:38 pm
RichardSchreier
(@richardschreier)
Active Member

And here is my second, the frog... are these considered good prints?

Posted : 24/04/2021 9:23 pm
Diem
 Diem
(@diem)
Honorable Member

Better than a lot of the first prints we see here.

Your first layer is not quite squished enough.  Run the first layer calibration again.

At the end of the calibration you are aiming to print a single layer *sheet*. It should be possible to peel it off in one and fold it without the threads seperating. If it breaks into lines it is too high, not squished enough. If it is a single sheet but with wavy lines or drag marks on it you are too low.

For most people it pays to use 7x7 mesh bed levelling; activate it with the LCD menu..

Many beginners have problems with the built-in first layer calibration routine. There are alternatives, see this page by a regular poster here:
http://projects.ttlexceeded.com/3dprinting_mk3_live_z_calibration.html

and look at this thread:
https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/

If you are still unsure show us a picture of the bottom of a suspect print.

Welcome to the Forum...

 

 

 

This post was modified 2 months ago by Diem
Posted : 25/04/2021 3:45 am
jsw
 jsw
(@jsw)
Noble Member

You are definitely in the ballpark.  I would echo the suggestion to switch to 7x7 bed leveling and to do a more rigorous Z calibration with any of various test prints such as the one used for the My Way cal.

Posted : 25/04/2021 10:13 am
RichardSchreier
(@richardschreier)
Active Member

@diem

Thanks diem, appreciate the sound advice, have also printed benchy which I will post shortly, but will try ther 7x7 and recal z

Posted : 25/04/2021 2:46 pm
RichardSchreier
(@richardschreier)
Active Member

@jsw

thanks jsw, I am on the path to 7x7 and recal

Posted : 25/04/2021 2:46 pm
RichardSchreier
(@richardschreier)
Active Member

And here is my latest benchy

 

Posted : 25/04/2021 3:30 pm
Diem
 Diem
(@diem)
Honorable Member

And here is my latest benchy

May we see the bottom?

Cheerio,

Posted : 25/04/2021 3:50 pm
RichardSchreier
(@richardschreier)
Active Member

@diem funny you should ask, was just doing that 🙂

Posted : 25/04/2021 4:02 pm
Clarmrrsn
(@clarmrrsn)
Honorable Member

Still think your first layer needs some work.  Not a very clear photo but looks like needs squished more.

https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/life-adjust-z-my-way/

Use Jeffs method, as Diem says need to be a solid sheet, after reading jeffs instructions skip to pg40 and look at Joans photos, very clear description of what you are looking for, takes a bit of time to nail the first layer so dont rush it.

I know its fun to print, but without a good first layer your ptints may fail.

This post was modified 2 months ago by Clarmrrsn
Tank you very much!...
Posted : 26/04/2021 8:28 am
Diem
 Diem
(@diem)
Honorable Member

I agree with @clarmrrsn, your first layer needs attention. It's close but I would expect problems with taller prints.

Cheerio,

Posted : 26/04/2021 11:17 am
RichardSchreier
(@richardschreier)
Active Member

Thanks for your help everyone, I've got some research and calibration to do thanks to all of you, really appreciate your insights.

Posted : 26/04/2021 2:04 pm
RichardSchreier
(@richardschreier)
Active Member

Thanks again everyone, I posted at the other forum, getting some strange results when I retry printing at an offset that previously worked and when retired did not... here is a pic...

The right print is the original that did well at -1.195, the one on the left is a second attempt at -1.195 to get a more accurate setting and you can see the quality is nothing like to first -1.195 print... sigh.

Posted : 26/04/2021 7:13 pm
Share:

Please Login or Register