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Questions tagged [extrusion]

Questions about extrusion mechanisms in varying types of 3D printers.

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2answers
64 views

3D printing overhangs that are over .200 in

I am new to 3D printing but have been in CNC Machining for a few years. I have a part I am trying to print that is a cylinder 1.000 in. in diameter and has a .200 in overhang starting at 1.300 in. In ...
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1answer
32 views

Why and how am I supposed to change the extrusion multiplier? [duplicate]

The slicing software knows exactly (given accurate E-step, filament diameter, nozzle diameter values) how much cold plastic is pushed in the extruder and how much mass is extruded. Why should the ...
1
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0answers
44 views

How to calculate the extruder gear ratio given a desired max printing speed filament diameter and nozzle diameter?

I have a Printrbot LC with the following extruder gears: Stepper on the right, filament toothed gear inside, same size of the small stepper gear. I don't have much more information besides the model ...
4
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2answers
108 views

Ender 3 Pro Filament extrusion problems

I run quite a few Ender 3 Pro's using the same slicer settings (Simplify3D), and just recently I have noticed a very odd extrusion problem. I find that at about the same height on several printers ...
3
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2answers
67 views

Why is my 3D printer not extruding properly?

I have a Duplicator i3 mini, which has yet to make it a month without breaking. This time it is extra broken because the filament is not extruding properly. the most successful print I've had yet had ...
1
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1answer
80 views

Retraction Jamming Problem!

Recently I had this problem where I needed to change filament from PLA to PET-G or similar. And... filament jam. After playing around with different settings and speeds and still getting the same ...
2
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1answer
87 views

Printing with PETG, printer says it's out of filament when it clearly is not

Background: I have an Alfawise U20 (CR10 clone) and am still somewhat of a noob, though I've been learning as much as quickly as time will allow. The Alfawise U20 has "out-of-filament" detection, ...
1
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2answers
125 views

Watts of filament extrusion

I'd like to calculate the wattage lost through the filament being extruded (or in other words, at how many Watts I'd have to run an ideal heater that loses heat ONLY through filament so that it stays ...
3
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1answer
118 views

How is E value calculated in Slic3r?

I want to know the math behind how Slic3r calculates E values. $E_{value}$ represents amount of filament in mm (unless volumetric extrusion is selected) that has to be fed into the hotend to obtain a ...
2
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2answers
128 views

Can't seem to fix over extrusion

I'm struggling to get my printer up and running for a few days now. The problem is as follows. I got a test model of a cube (40x40 mm) and everytime I try to print it, the nozzle creates these '...
2
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1answer
52 views

No extrusion, but manual extrusion works

I just bought and build my first 3d printer (HE3D K280 with Marlin) and I'm encountering some problems with Cura 4 and Repetier. When I load and slice a part, the printer does not extrude anything ...
1
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1answer
82 views

Strange banding on first layer/skin

I've been printing for a while with a Creality CR-10S with Colorfabb black PETG economy and all was good. Until today, where on a large, flat print (30x10cm - a small drawer) I can't manage to get a ...
4
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3answers
186 views

Print came out like a wafer

I'm not sure how else to describe it. There's probably a name for this but I just don't know it. But the bottom few layers came out great, but the rest came out kind of like a triscuit. Below are pics ...
2
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0answers
35 views

How is the Ex.xxx calculated? [duplicate]

How is the Ex.xxx calculated, formula G1 X129.000 Y126.322 E7.90758 G1 X128.476 Y125.548 E7.92045
6
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1answer
120 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 ...
2
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2answers
71 views

Is there any (relatively simple) way to determine whether a stepper is being directed to move by the voltage signal across its winding?

This may be a long shot, but I was wondering if the signals seen across a stepper motor's windings could indicate whether the stepper was being told to move over some short time period. This is in ...
5
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1answer
44 views

Slicer software capable of working with large filaments

I'm starting work on a very large 3d printer that uses very large filament. The idea is to house the entire thing in a shipping container and print things as large as cars. Filament will be some ...
4
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1answer
85 views

Extruder retracts filament while moving from default start line to actual object location

I am new to 3D printing and recently got a second hand RF1000 and am busy calibrating it. For this I want to print a basic calibration cube. I noticed the print doesn't always start with enough ...
11
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5answers
2k views

Isn't using the Extrusion Multiplier like cheating?

One thing I never understood is the so-called Extrusion Multiplier (EM) or Flow setting in slicers like Simplify3D (S3D) or CURA. The description for this setting reads... S3D: Multiplier for all ...
2
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0answers
52 views

Extruder calibrated, but prints still oversized by .1 mm or so

I've got a pretty straightforward problem. In general my printer is very accurate for the XYZ movements. What I'm running into is no matter what size my print is, the XY dimensions will be thicker by ...
2
votes
1answer
165 views

Monoprice Maker Select v2 stops extruding after about 200-300 mm

I've done a fair bit of looking around for an answer and have yet been unable to find one. So here is my problem, after about 200-300 mm of extrusion, the PLA stops coming through the nozzle. ...
4
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5answers
480 views

Can a single line of Gcode have variable extrusion rate?

Fairly long winded, but hopefully makes sense; I understand that G-code is executed line-by-line, and in the main printing phase each instruction is effectively go to location XY (assuming staying ...
2
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1answer
181 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 ...
1
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1answer
57 views

Periodical under extrusion with Slic3r

I got myself an Ender 3 printer, put it together and tried the test g-code, worked fine. But i sometimes have problems with under extrusion, as shown in the picture below. As you can see, the part to ...
6
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4answers
2k views

First 3 mm prints poorly, then fine after that

I have an Ender 3 that I have been pretty happy with so far, however it recently started an odd behavior and I can't figure out what's causing it. What happens is that the first ~3 mm of the ...
3
votes
2answers
173 views

Small structures are deformed after switching to Duet Wifi

I just switched to the Duet Wifi board (used MKS Gen L 1.0 before) and now small structures look terrible. From my observations the hot end moves correctly, but almost no filament gets extruded. On ...
1
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1answer
241 views

Material extruded to prime the nozzle doesn't stick to bed at first

When the material is extruded to prime the nozzle before the print starts it doesn't always stick to the bed for the first 20 or 30 mm of the line, causing the material extruded just after to peel off ...
2
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2answers
121 views

Weird surface thing

I have a 3D printer at home, the Colido Compact, and for some reason when I 3D print big flat surfaces a really weird thing happens. I'm using some PLA from Colido too I think It almost seems as if ...
1
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2answers
1k views

Filament Leaking During Automatic Bed Leveling

Before the print has actually started I have set up Auto Bed Leveling using a BLTouch sensor, during the period that this runs I find that material leaks out of the nozzle and curls back onto itself ...
6
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1answer
783 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 ...
2
votes
1answer
690 views

When I attempt to calibrate extruder steps the increased values don't correspond to physical increases

I am attempting to follow these instructions to calibrate the extruder, however when I increase the value for DEFAULT_AXIS_STEPS_PER_UNIT the change in physical ...
1
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1answer
107 views

Filament gets coiled inside the extruder

A while ago bought a Bowden extruder to replace the old built-in one (It was malfunctioning or something that I cannot remember well). This one in particular has been acquired: The thing is, that ...
3
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1answer
197 views

Print Lines Aren't Joining Together

I have encountered a problem where the print lines are not joining together, when I remove it from the plate it turns into a stringy mess. I am not sure what the problem is because I print out models ...
2
votes
2answers
211 views

Different lengths of filament is extruded with different temperatures

TL;DR: I'm looking to change the steps per mm but I'm not sure what to set it to. Do I decide on a temperature and change the rate based on the percentage for that temp? Or is there a more general ...
2
votes
2answers
1k views

Ender 3 extrudes plastic whilst at standstill, and while moving to start of print

I have a small problem where plastic comes out of the nozzle while the printer is at a standstill (normally towards the end of heating the nozzle for a print), and whilst it moves from the line for ...
2
votes
2answers
320 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 ...
1
vote
2answers
527 views

Is my printer over extruding?

I'm getting some slight pooling on the end of straight lines on my Ender-3 Is this due to over extruding? Or some other issue?
6
votes
3answers
471 views

Adding additional extrusion to a raft (raft with a skirt?)

I started using rafts more often, to get better results with complex or fragile parts, but my Ender 3 consistently under-extrudes the initial outside line of the raft (for the first inch or two, where ...
4
votes
1answer
203 views

Hemispherical Bowl : how is it possible?

I was reading up about how to extrusion print an overhang greater than 45 degrees, when something weird stuck me. I see lots and lots of 3D extrusion printed bowls that have perfectly printed ...
4
votes
1answer
272 views

Under extrusion, looking for specific information

Have a Monoprice maker select with a Micro Swiss hotend, and am using Cura IIIP. Edit: plus Janbex PLA 1.75mm filament. Trying to print a Pi camera mount, but am getting (I believe) under extrusion, ...
3
votes
1answer
965 views

Massive over extrusion after changing firmware

I have an Anet A8 printer (no modifications) and first printed a calibration cube. It came out okayish, within expectations. Afterwards I flashed the firmware to Marlin 1.1.9 and since then have very ...
4
votes
2answers
1k views

PETG filament doesn't stick reliably to fake Buildtak surface

I just got my first spool of PETG and tried to calibrate an Ultimaker Cura profile for it on my Ender 3 today with limited success. I've had severe issues with the filament not sticking to the build ...
5
votes
1answer
1k views

Slicer line width vs. extrusion multiplier for layer adhesion?

My question would like to address what would be better for adhesion and general quality and possibly strength: either increase the slicer line width option or increase the slicer extrusion multiplier ...
4
votes
1answer
113 views

Unknown issue affecting print quality

I have been having issues with a vase print using a FlashForge Creator Pro. I am using the default slicer for the printer(FlashPrint) because the Creator Pro only accepts ...
4
votes
1answer
148 views

Given a viscosity is it possible to calculate required pressure for desired output?

The following rheology question relates to predicting the flow of polymer-based non-newtonian fluids extrusion processes. In this case, applied to 3D printing. I'm trying to calculate the pressure ...
7
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1answer
932 views

Extruder feedrate when loading and unloading filament

I have an MKS Base 1.4 board with a TFT28 touch screen and a Titan Aero setup. When I use the load filament command from the touch screen the motor turns at a crazy speed to load filament, whereas if ...
6
votes
6answers
3k views

Constant under extrusion and filament grinding

I sadly have a big problem since a couple of weeks and I cant fix it myself. For over 20 prints, I had the same problems: At the start, everything goes well but at some point of time, my Creality CR-...
5
votes
1answer
486 views

How can you calibrate extrusion multiplier value in Slic3r WITHOUT changing printer settings in memory?

Most tutorials ask you to change the printer settings using the ...
6
votes
1answer
381 views

Problems with Z step

Recently I bought a Prusa i3 pro W (from Geeetech) and I've been struggling with something that is ruining all my printings. I attach a photo with what was supposed to be little "boxes": As you ...
4
votes
2answers
670 views

Underextrusion after travel moves with PETG/Colorfab XT

I came across several issues which seem to have been lowered. Firstly, I changed from a 0.4 to a 0.5 mm nozzle. Because of the backpressure I was not able to print my PETG (Colorfabb XT filament) ...