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Extrusion Maybe?  

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JCardoso
(@jcardoso)
New Member
Extrusion Maybe?

Hello

I've just stopped watching 3D printing videos and bought myself a printer.

I have encountered some problems on my prints.

First, it seems that my bed has some problem.... on thee corners the first layer it is OK, but the middle is too high... if it is good on the middle the corners are way too low. I will check the build this weekend to see if I'll get lucky. as if I had a warped bed.

The problem it is another... this time.

I get some filament spills and some non clean prints. tried some settings but as a newbie I'm not sure what I'm doing wrong.

Some photos and files follows

Thank you for your help... and if someone as a tutorial link to the Prusaslicer settings I'll be thankful...

ZIP archive

JC

 

Posted : 19/10/2021 4:58 pm
Diem
 Diem
(@diem)
Noble Member

Try 7x7 mesh bed levelling (LCD menu)

and please show us your nozzle/hotend assembly.

Cheerio,

Posted : 19/10/2021 10:34 pm
JCardoso
(@jcardoso)
New Member
Topic starter answered:
nozzle/hotend assembly

Thank you, I'll try the 7x7 mesh leveling....

Here it is, my hotend assembly. Tell me if it is enough.

JC

Posted : 20/10/2021 4:33 pm
Dan Rogers
(@dan-rogers)
Noble Member
What kind of filament ... how long was it sitting out in the air ... and show the bottom layer

Let's see that bottom layer - it's the first thing you will want to share generally.  The nozzle pics (the one with the nozzle was the interesting one) seem fine.  Then, more about the thing you are trying to print, a picture of the first layer as it is going down, and the post-slicing saved prusa slicer project file (saved AFTER you slice the model).  That will provide pretty much all we need around here to start making educated guesses.

Posted : 21/10/2021 6:29 pm
JCardoso
(@jcardoso)
New Member
Topic starter answered:
RE: Hope to get all your answers right....

Hello.

Sorry for my "newbieness"... I'll start from the beginning.

I don't have experience on 3D printing so I'll try to explain the best that I can.

The machine is a MK3S+ assembled a couple weeks ago.

PLA silver from the assembly box... opened when built. I live in Switzerland and the weather is not known to be whet, by the opposite, we need to put some humidifier on the winter time.

I'm trying to print a small organizer bin to put some screws. Stanley_Organizer_-_single_bin_-_split_short_1.2mm_sides

I think the first layer is too high on the center of the bed. the corners are ok.

Did a 7x7 mesh leveling and this is the result of the print 1st layer

The small blobs of PLA are between the base and the walls, also on the top of the bin.

Stringing happens on the back side of the printer and inside.

this is basically for this print.

I've noticed and don't know if it is normal. When it starts heating the PLA is always leaking and the "cleaning line" wont remove all the material. The bin print was clean, I watched to start. but I'll put photos from another print.

Thank you for your help and hope to answer/explain my problem.

JC

Posted : 23/10/2021 9:16 am
Dan Rogers
(@dan-rogers)
Noble Member
Z is a little low.

Couple of things you said and showed

The picture of your calibration run and the picture of the filament built up on your nozzle, and the symptoms you describe ... I think your live Z value is about 10 microns too low.  Maybe 20.  If the filament is oozing out of the nozzle on it's own after you load it and clean the nozzle, you also have moist filament.  A little is normal (perfectly dry is hard to achieve)

Posted : 25/10/2021 6:54 am
Diem
 Diem
(@diem)
Noble Member

That last picture showing filament picked up from the bed/stringing confirms what @dan-rogers is saying.

You are very close to an optimum Z value.  Without drying your filament a perfect finish is rare, get used to finishing the print with a quick pass of fine-grit abrasive or a waft from a heat gun.

Cheerio,

Posted : 25/10/2021 11:51 am
JCardoso
(@jcardoso)
New Member
Topic starter answered:
Thanks

Thank you for all the answers.

I'll try to dry out this spool and try with a new one.

Cheers

JC

Posted : 27/10/2021 4:38 pm
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