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micahel.i
(@micahel-i)
New Member
Stringing Issues

I'm trying to do a print at a 0.05mm layer height.
It failed due to massive stringing between the supports generated by Sli3er PE. I started to work on my retraction settings and after 10 test prints, i was still getting terrible stringing.

Retraction settings:

The next thing which gave me some positive change was printing at a cooler temperature. I printed test prints from 215C -> 190C (in increments of -5C).

From left to right (210C-190C) in increments of -5C:

My question is what else could i do to improve my print quality and reduce the stringing?

Posted : 30/11/2018 5:28 pm
bobstro
(@bobstro)
Illustrious Member
Re: Stringing Issues

Do you get the same stringing at 0.10mm layer heights?

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 : 30/11/2018 5:53 pm
micahel.i
(@micahel-i)
New Member
Topic starter answered:
Re: Stringing Issues

I didnt test the 0.10mm layer height. If that prints better, what could be the issue with 0.05mm printing?

Posted : 30/11/2018 6:10 pm
bobstro
(@bobstro)
Illustrious Member
Re: Stringing Issues


I didnt test the 0.10mm layer height. If that prints better, what could be the issue with 0.05mm printing?
The guy from Tomb of 3D Printing Horrors has a good video on YouTube that covers this topic near the start. In short: Thinner layers are a lot more likely to sag & string due to the repeated proximity to the nozzle as thinner layers are printed, and repeated heating of material. The material extruded with thinner layers stays hot a lot longer, and can thus string independent of your retraction and other settings. He also touches on the danger of using 100% infill and other related problems with small detailed prints.

Tuning your extrusion multiplier for each specific filament might help reduce over-extrusion which can contribute. Prusa's got a good page on calibrating your multiplier. I'm fighting a battle with ultra-fine wispy strings, not the thick stuff you're fighting, so I'm gathering up as much info as I can find. Can't say I've got a 100% answer, but my problems are greatly reduced.

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 : 30/11/2018 7:20 pm
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