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julian.z2
(@julian-z2)
Active Member
problem with printing

It is not my first print, but after 2 weeks of not printing my every print is very bad. You can see the picture. Thanks for help.

Posted : 21/08/2018 1:03 pm
RufusClupea
(@rufusclupea)
Reputable Member
Re: problem with printing

Last time I saw something like that, it was because a large "booger" (joan.t calls them blobs of doom) had congealed on my nozzle/print head.

You may have a clogged nozzle. When the hot plastic begins to flow, does it come straight down, or at an angle or kinked?

That's "MISTER Old Fart" to you!

Posted : 21/08/2018 4:15 pm
julian.z2
(@julian-z2)
Active Member
Topic starter answered:
Re: problem with printing

Cant see how it goes, after 20 seconds something like this happen 😕 Anything left on the platform...

Posted : 21/08/2018 4:39 pm
RH_Dreambox
(@rh_dreambox)
Prominent Member
Re: problem with printing

You have to adjust the Z.-level, lower the nozzle.

Bear MK3 with Bondtech extruder

Posted : 21/08/2018 6:06 pm
julian.z2
(@julian-z2)
Active Member
Topic starter answered:
Re: problem with printing

So should i go more on minus or less? I was combining with this and problem was still happening.

Posted : 21/08/2018 7:18 pm
RH_Dreambox
(@rh_dreambox)
Prominent Member
Re: problem with printing

You should go more minus. Try in step of -10 units so you don't jump over the best level.

Bear MK3 with Bondtech extruder

Posted : 22/08/2018 9:19 am
julian.z2
(@julian-z2)
Active Member
Topic starter answered:
Re: problem with printing

I have gone -0.10 then again and again.... Still nozzle "catches" filament and destroys everything... I think it gives too much filament when it starts the line

Posted : 22/08/2018 7:58 pm
bobstro
(@bobstro)
Illustrious Member
Re: problem with printing

The suggestions on Live-Z adjustment are good, but don't forget to give the bed a good cleaning. Touching the bed should be avoided. Give it a good clean with dish soap under the sink, then avoid touching it as much as possible. Give it a good wipe with 91%+ isopropyl alcohol whenever you do touch it. Do your Live-Z adjustments on a bed you're sure is clean!

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 23/08/2018 1:11 am
julian.z2
(@julian-z2)
Active Member
Topic starter answered:
Re: problem with printing

I use 70% isopropanol before every print

Posted : 23/08/2018 8:56 pm
Lichtjaeger
(@lichtjaeger)
Noble Member
Re: problem with printing

I use 70% isopropanol before every print

This is the mistake. The remaining 30% will act as a separator. Use 95% IPA or higher.

Use soapy water to remove the contamination you added to the build plate.

Posted : 24/08/2018 8:10 am
julian.z2
(@julian-z2)
Active Member
Topic starter answered:
Re: problem with printing

Thank you, but you think that is the problem?

Posted : 24/08/2018 11:34 pm
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