Questions tagged [retraction]

Use this tag for questions about retraction of filament.

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Ultimaker Cura is not always retracting in exported G-Code

TL;DR: Upper layers of a stringing pyramid test are missing retractions in the G-code. Edit 1: added printer info and additional settings. Edit 2: Clearing up confusing wording. Update: I wrote a ...
0
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0answers
133 views

Titan extruder retraction noise

I am experiencing some retraction noises with my Titan Extruder. At first the noise was more of a clicking noise, and the gear was skipping. I didn't feel any backlash with my finger but I still ...
4
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2answers
79 views

Prints coming out very stringy

So these past few days I have been 3D printing again with my Ender 3 with PETG and 0.4 mm nozzle and while I have been using the same setting as usual I am seeing an unusual amount of stringing ...
1
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1answer
90 views

How to unload filament as cleanly as possible using the extruder motor?

I usually unload filament using the extruder motor, with the nozzle around 30 °C below the filament's print temperature. Despite this, often a significant amount of filament is left in the nozzle,...
1
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1answer
73 views

Extusion rate limiting and firmware retract

One frustration I have with Cura is that it has no way to set print speed in terms of a volumetric extrusion rate, when extrusion rate is the main physical limiting factor for how fast you can print. ...
6
votes
1answer
1k views

How does slipping Bowden tube affect retraction or does it at all?

I have an Ender 3 Pro with upgraded Bowden capricorn tube. The tube will move approximately 1-2 mm during normal operation, though it will not come out of the coupler at all. I have read that the ...
4
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2answers
467 views

Under extrusion… sometimes

You can see small gaps in the print which looks like under extrusion (see image below). What is the reason for that? I've tried smaller retracting distances. Temperature looks stable. Print settings:...
2
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1answer
53 views

What's the best way to pull out fillament from an all metal print head

Since retractions above 4 mm can cause jams due to plastic sticking to the cold half of the metal print head, what's the best way to avoid jams when swapping filaments? Cool down and yank out, ...
4
votes
1answer
2k views

Ender 5: Bowden tube shifts in/out of extruder during retractions

I have an Ender 5 with an aluminum extruder that was printing beautifully for a few days after building it. I received a Capricorn bowden tube and new couplings as a gift, and replaced those, and now ...
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0answers
121 views

How reduce the number of retractions? [closed]

I want to print a phone case. Compared to other models I have sliced, Simplify3D implements a lot of retraction moves. Is this normal? How can I (Should I?) reduce the number of retractions? What ...
7
votes
1answer
391 views

Handling retraction when using a mixing extruder (2 in 1 out)

I have a Zonestar Z5FM2 running Marlin 1.1.8 with a mixing extruder. That is, 2 extruder stepper motors feeding a 2-in 1-out hotend (similar to the E3D cyclops). I'm slicing with Simplify3D and I ...
9
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1answer
1k views

Stringing during travel on first layer with Ultimaker Cura

I'm using Ultimaker Cura 3.6.0 and I am getting some annoying "stringing" on the first layer. This isn't new to 3.6.0 as I have seen it on pretty much every version I have used. What appears to be ...
3
votes
1answer
505 views

Use Gcode Extrusion Speed in Calculations

I have a Rostock Max V2, and I've added a second extruder going into a y-splitter into a single nozzle on my printer. I have both extruders working correctly, but I'm having trouble tuning the ...
6
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1answer
3k views

Question about retraction distance and stringing/print quality with PETG

I've tried printing the Basic Stringing Test on my CR-10S using PETG (250 °C nozzle, 80 °C bed) with different retraction distances leaving all the rest unchanged. In the image below you ...
8
votes
1answer
1k views

Extruder doesn't retract on inner wall lines thereby causing stringing

I am trying to stop the stringing that occurs on one of my prints, I have set it so that it retracts the filament which does stop it during the extrusion of the outer wall layer, however when it comes ...
5
votes
1answer
2k views

Retraction Causing Skipping

I am trying to get rid of stringing on my prints, to do that I have tried turning on a retraction in Ultimaker Cura, and reducing flow. When I turn on retraction it causes the extruder to skip on the ...
3
votes
2answers
589 views

Stuttering extrusion after layer change

I am currently encountering a problem where under certain circumstances, the extruder stutters when it starts a new layer. I am printing on an Anycubic i3 Mega and am slicing with Cura 3.6.0. The ...
4
votes
1answer
1k views

Ultimaker Cura not always telling extruder to retract when traveling

I'm having a problem with Ultimaker Cura (v3.4.0) where it doesn't always tell the extruder to retract when performing a travel, which causes the hotend to leave a "trail" as it's moving and not start ...
6
votes
2answers
4k views

Monoprice Select Mini V2 retraction/stringing problem

I have a Monoprice Select Mini V2 and I’ve recently been having issues with little strings that are thick and sturdy sticking off of models: I used Ultimaker Cura v3.4.1 to slice this model: Basic ...
4
votes
2answers
1k views

How to remove unwanted filament trails from sharp corners

I'm a 2-week newbie at 3D printing, working on a new Qidi Xpro machine (that is solid and one that I like). So, I do not want to believe that this issue is caused by my printer itself. I'm hoping that ...
8
votes
1answer
9k views

What is retract speed & length?

On a 3D XYZ printer extruder, I found two terms I have no idea about: retract speed retract length What are these and why/how should they be set?