Tips on how to avoid these zits  

  RSS
zimmermann.felix99
(@zimmermann-felix99)
New Member

This was my third attempt at this print. I'm new here, but I already read a lot about the problem Zits
at simplify.support and tried many options
... but unfortunately, despite many changes, they have only become minimally smaller.

I use original Prusa PLA

 

Printer settings

Does anyone have an idea what I should change?

 

Posted : 14/07/2020 5:50 pm
Oxygen
(@oxygen)
Estimable Member

Circular objects do not like the seam position 'standard' I get the best results with:

Mini with FW:4.2.1 + Bondtech Heatbreak...
Posted : 14/07/2020 6:03 pm
Karl Herbert
(@karl-herbert)
Famed Member
Posted by: @zimmermann-felix99

This was my third attempt at this print. I'm new here, but I already read a lot about the problem Zits
at simplify.support and tried many options
... but unfortunately, despite many changes, they have only become minimally smaller.

I use original Prusa PLA

 

Printer settings

Does anyone have an idea what I should change?

 

 if things don't get much better, also try to reduce retract in filament settings.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 14/07/2020 6:11 pm
bobstro
(@bobstro)
Illustrious Member
Posted by: @zimmermann-felix99

[...] Does anyone have an idea what I should change?

Those are most likely caused by the z-seam created as the nozzle is moved from layer to layer. You can move the seam around and try to tuck it in corners, but you can't get rid of it completely. Looking at your pictures, it looks like you have the z-seam position set to Random, which will scatter the dots all around and create those zits. You might have better luck with other options: Nearest and Aligned will try to keep the seams in corners (which won't work with cylindrical shapes with no corners). Rear will align them along the rear of the part.

You may be able to rotate the part to minimize appearance. In some cases, you just have to live with it and be prepared to sand it down after printing.

The upcoming PrusaSlicer update will include more options I believe. In the meantime, you can reduce the distortion as much as possible by calibrating your extrusion multiplier for each filament to reduce the size of the zits. The less over-extrusion, the smaller they'll be. With a bit of work and patience, you can greatly reduce the appearance. The filament you choose will also affect how obvious the seam is.

 

 

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 : 14/07/2020 6:11 pm
jsw liked
bobstro
(@bobstro)
Illustrious Member

FYI - A good screen capture program can be much easier to use. I'm fond of Monosnap, free for individual use.

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 : 14/07/2020 6:20 pm
Karl Herbert
(@karl-herbert)
Famed Member

@bobstro

is the resolution of "Monosnap" better than the "snipping tool" solution integrated in windows?

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 14/07/2020 6:51 pm
zimmermann.felix99
(@zimmermann-felix99)
New Member

@oxygen

I chosed random.
Posted : 14/07/2020 7:13 pm
zimmermann.felix99
(@zimmermann-felix99)
New Member

@karl-herbert

I will test it. Thanks

Posted : 14/07/2020 7:17 pm
Oxygen
(@oxygen)
Estimable Member

As said by bobstro and me that could be the  main cause of your problem (best options are aligned or rear) 

Mini with FW:4.2.1 + Bondtech Heatbreak...
Posted : 14/07/2020 8:15 pm
bobstro
(@bobstro)
Illustrious Member
Posted by: @karl-herbert

[...]is the resolution of "Monosnap" better than the "snipping tool" solution integrated in windows?

Monosnap captures the native resolution. Not sure about shipping tool, but Monosnap is cross-platform (incl. Linux) so I like to recommend it. It also has some nice annotation tool.

 

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 : 15/07/2020 12:02 am
crawlerin
(@crawlerin)
Honorable Member

@bobstro

Windows Snip&Sketch (the successor to Snipping Tool) is really handy now, I set it to activate on Print Screen button press, also works in games. You can do annotations too.

Not multiplatform though.

Posted : 17/07/2020 1:04 pm
Share:

Please Login or Register