Questions tagged [extrusion]

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

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Different direction for two extruders

I am building a 3D printer using 2 extruders which will mix and print fluid-like inks. Is it possible to let both extruders turn in opposite directions at the same time, that is in 1 line of G-Code? ...
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1 vote
3 answers
92 views

Filament end expanding and seizing

This is a continuation of this question where comments and answers were extremely helpful in diagnosing the issue, which I am still unable to solve. I determined I have the problem shown in figure 3 ...
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Trouble with polycarbonate print on Ender 3 Pro - What could be the cause?

I performed a polycarbonate modification on my Ender 3 Pro (heated chamber, external electronics, all-metal hotend, new thermistor, PID-tuning, dry-box, actively cooled motors through Peltier cooling, ...
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Print Fail: Partial Mess - What are possible causes?

Can anyone help explain what might be wrong to do this? I am printing a bunch of the same item.
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Is it possible to manually 3D print on an uneven surface?

I chipped off a bit of my otherwise perfectly usable laptop battery and would like to rebuild it. Consider the following picture: Now compare it to what is visible e.g. here. I'm curious if it's ...
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Anycubic Vyper filament loading problems

I recently acquired the Anycubic Vyper, and it's been working fine, until a few days ago. The filament extruder stopped working properly, as in it would extrude an amount of filament, before making a ...
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2 votes
1 answer
105 views

Ender 3 Pro: Flow rate drops after time

I have to set my print flow setting extremely high (up to 180 % and more) as otherwise, I get an under extrusion. I have also noticed that from time to time I have to update that setting to an even ...
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CR6-SE issues after a year and ~15 kg of PLA

I've had a CR6-SE for just over a year now and am not new to 3D printing. However, prior to this I had access to a pretty much brand new Ultimaker S5. When my CR6-SE arrived, it was essentially plug ...
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Is there any print quality difference switching from brass to steel nozzle?

Brass has better thermal conductivity compared to steel or hardened steel but it has also far less wearing resistance especially compared to hardened steel that among brass and normal steel has the ...
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2 answers
410 views

Ender 3 Pro extruder motor failing constantly

I have had my Ender 3 Pro for about 2 years now and it has been working amazingly! Since November it's struggling very much while printing. I am quite sure the problem lives on the extruder motor. ...
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1 answer
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Is resin 3D printing considered "additive"?

Subtractive manufacturing has been the way of the world for a while, but additive manufacturing, which is basically synonymous with 3D printing, has disrupted all of that. If extrusion-based printing ...
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1 answer
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Filament Spool Stalls Extruder Motor Destroying Print

I am having the frustrating problem where my extruder motor starts skipping steps and stops extruding simply because my filament is wound too tightly. There are some parts of my filament that are so ...
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2 answers
277 views

Filament Jamming in Hotend. Why?

This has me stumped. I had been printing normally until this happened. Below is an expurgated version of my headache over two days. Some help would be appreciated. Printer is Hypercube Evolution (...
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2 votes
0 answers
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Over-extruding on small layer heights (0.06 mm), but fine above 0.15 mm?

I re-assembled an i3 that used to be on a production line. It works OK when the layer height is set to 0.15 mm, but it over extrudes “A LOT” when used with a layer height like 0.06 mm. At first I ...
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1 answer
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Clearing persistent partial clog after printing nylon

My Prusa i3 MK3S printer experienced a partial clog last time I was printing with nylon. Although I've experienced clogs and partial clogs before, all the usual tricks I've tried have not worked this ...
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3 answers
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Do print issues (extrusion, blockage, etc...) become less of a problem with more expensive printers?

I own an Ender 3, it's about 3 years old and the issues I have with extrusion, leaking and filament blockage are monstrous. Examples of problems like this are filament flow issues, filament blockage, ...
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3 answers
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How do I make the layers stick together more and warp less?

I have a Chiron from Anycubic and I have had some leveling issues in the last few weeks, however, I believe that I have sorted that. The layers attached to the base plate or the raft now come out very ...
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2 votes
0 answers
37 views

Custom slicing solution needed

So I have a printer that I'm prototyping right now, and it's a little different; the Y-axis is a rotary drum. To compare to a bed-slinger, instead of the surface traveling forward and backward, it ...
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2 answers
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Inconsistent layer widths and uneven outer walls

I have problems with layer widths and uneven outer walls on my 3D prints. Sometimes layers are squeezed and sometimes pushed outside. I noticed that these problems happen when there are retractions on ...
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2 votes
2 answers
756 views

Why does FlashPrint have different (non-100%) default extrusion ratios for different filaments?

In FlashPrint there is an Extrusion Ratio setting. It's set to 97 % for the stock PLA profile and 107 % for the stock PETG profile. I would've thought these would be 100 % by default (and the same for ...
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2 votes
2 answers
1k views

Extruder stops printing before finishing first layer (Ender 3 v2 w/BIQU H2)

Let me preface this with me being quite a newbie to 3D printing, however, I am an engineer and coder, so tinkering with stuff like this is quite the norm for me. Don't be afraid to be too technical, ...
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1 vote
1 answer
435 views

Ender 3 v2 layer skips

I am having some issues with my printer skipping/not extruding random layers of my prints. It happens a few layers in and sometimes doesn't even affect the entire layer. I have tried switching from ...
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1 vote
1 answer
449 views

What makes a new nozzle clog before I can finish the print?

I found my Ender 3 was skipping extruder steps a lot, mainly while printing infill (tri-hex at 30%), to the point I saw several layers of infill with spotty extrusion or nothing adhered at all. When I ...
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3 votes
1 answer
91 views

Ender 3 extrusion not working properly

I got a new hotend for my Ender 3. When I start to 3D print a model, everything seems to be going well. After about 20 minutes or so the extrusion stops and the extruder motor can't push the filament ...
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4 votes
0 answers
563 views

Inconsistent layer stacking

I'm throwing this out that as a long shot, as I'm not sure if anyone can help me, but maybe there's someone out there who had a similar issue and might have successfully dealt with this before. I'm ...
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2 votes
0 answers
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Bioprinter does not extrude Anet A8 Marlin

I have a modified Anet A8 that is supposed to print hydrogels (paper : Ultra-Low-Cost 3D Bioprinting, Kahl M et al. 2019). For this to work, we do not need any temperature-related settings, however, I ...
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3 votes
3 answers
546 views

Prusa MK3S not extruding during printing but extruder working

I didn't have any printer-related problem for the past 6 months, but now all of a sudden my Prusa MK3S stopped extruding during printing. This is very strange as I can easily load\unload filament and ...
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1 vote
1 answer
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Prints have over extrusion only during diagonals

So I have printed multiple benchies with various slicer settings. I have also made sure my bed is leveled well. But no matter what I do, I get these over extrusion whenever my nozzle is moving in ...
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0 votes
1 answer
162 views

My Monoprice Select Mini v2 isn't pushing out filament and it isn't the nozzle

The printer isn't pushing out filament. I'm using the filament that came with the printer, and I know it's not the nozzle. I've tried to get the metal piece surrounding that goes from the Bowden ...
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1 vote
0 answers
386 views

What volumetric extrusion rates can the Ender 3's stock hotend achieve?

With a fully stock Ender 3, the limiting factor is almost surely the extruder, not the hotend, so I'm asking from a standpoint of having an upgraded extruder (mine is direct drive) but stock hotend. I'...
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1 vote
1 answer
435 views

Bed is leveled and not warped but still uneven printing?

I have the Creality CR-10S. I replaced the glass it originally came with as it was warped and I wasn't getting any material out on 2 of the sides. I switched to a PEI sheet and got the same results ...
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1 vote
0 answers
83 views

Top and bottom of part not coming out smooth

I have an Ender 3 printer and can not figure out why the top and bottom layer of this print comes out the way it does every print. I have tried increasing the initial layer height to 0.3 mm and ...
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2 answers
101 views

What is cause of blob when layer area reduces by 50%?

This is printing PETG extruding at 250 °C, 1st layer bed at 80 °C then 60 °C on other layers. Nozzle is 0.4 mm; printer is German Reprap X400. The all metal extruder is clean with no oozing. The ...
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4 votes
1 answer
2k views

What are ways to avoid heat creep?

Printer configuration and many settings affect heat creep. Heat creep stopping extrusion doesn't necessarily involve melting the filament too high above the nozzle. All it takes is making the ...
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1 vote
1 answer
2k views

How to change the extrusion value (E parameter) in G-code?

Before I ask you my question I want to summarize my problem. I am trying to build my personal 3D Printer and I can send the controller of my Extruder (Motor) only integer values. Slicer (Cura) ...
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2 votes
4 answers
229 views

Are there FDM epoxy/resin printers?

After seeing a question about FDM printing of temperature-resistant parts, high-temperature 2-part epoxy came to mind. Are there any (experimental or production) FDM extruders for laying viscous, fast-...
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0 votes
1 answer
270 views

Printer is over extruding for the first few layers

I'm facing a strange issue where my printer is over-extruding only for the first 6-8 layers (layer height of 0.2 mm). All the layers above that have no such issue, which, as far as I understand, rules ...
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2 votes
2 answers
137 views

e-steps are wrong only during printing moves

I have two otherwise-identical machines (called "Lefty" and "Righty"), so I have a baseline to compare. I am running Marlin 2.0.7.2 on both machines. They are Creality CR-10 ...
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1 vote
1 answer
2k views

Incorrect inner dimensions of 3D prints with Ender 3

I have problem with my Ender 3. Whenever I print, I have proper outer dimensions (accuracy usually better than 0.1 mm, sometimes a bit worse), but every hole, pit or any inside dimension is inaccurate ...
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1 vote
5 answers
242 views

Will 3D printing work upside down or in zero gravity?

I assume SLA printing only works on Earth and upright. But would fused-filament printer (e.g. Prusa Mk3) work in zero gravity? What about upside down or sideways? If not, could it be modified to work ...
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1 vote
0 answers
274 views

Ender 3 Pro - Randomly skip lines

I am a newbie to the 3D printing world. Every night spending hours researching and troubleshooting. Recently though I am having a weird problem for which I can not figure out a solution. While ...
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1 vote
2 answers
52 views

Help fixing Prusa i3 MK3 print jams

While printing a paint rack from thingiverse I keep getting jams. Other prints (shorter) work fine. Can anyone give me a clue? Here's a video of the printer I thought it was heat creep so I increased ...
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1 vote
1 answer
369 views

How is the extrusion rate matched to the movement speed?

A typical line of (depositing) G-code seems to set a maximum speed (F), a new position to move to (X, ...
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1 vote
1 answer
51 views

What causes this characteristic pattern and what is it called?

I am using a Qidi Tech 1 (Flashforge Creator Pro). There is no auto bed leveling and I have done my best to tweak it by hand using the screws underneath the heated bed plate. What is causing this ...
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1 vote
1 answer
144 views

Resume print but no extrusion

Had a print stop about 20 % through and read through some old questions (3+ years) so I'm posting again. Apologies if it's in here some where... Found the layer to restart, deleted everything from ...
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2 votes
2 answers
4k views

Gaps between perimeter walls; potential under extrusion?

The cube is a 2 cm x 2 cm with infill at 30 % and layer height 0.2 mm, more details can be seen below. I'm printing with PETG using an Ender 3 printer. There seems to be a gap between the perimeter ...
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1 vote
1 answer
570 views

Filament consistently jamming / clogging in Bowden tube on MP mini 3

I've had this MP Select Mini III for years and years. Lately it's consistently jamming/clogging somewhere between the hot end and the PTFE tubing - but not right away, often when it starts getting to ...
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  • 135
1 vote
1 answer
632 views

Causes of over-extrusion?

What could be the causes of a consistent over-extrusion? I know about these: steps/mm of extruder motor set too high larger filament diameter slicer setting: filament diameter - setting it lower ...
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1 vote
3 answers
1k views

Optimum ratio of line width to layer thickness for overhang performance?

When I have overhangs in my model, Cura colors them red. However, I noticed if I make layer thickness thinner, the red area is reduced or disappears. This could mean that thinner layer thickness is ...
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1 vote
2 answers
2k views

Creality CR-10 problems with extrusion while printing

I have an extrusion problem with my creality CR 10 3D printer while printing. I am using a standard 0.4 mm nozzle with a 1.75 mm diameter PLA and I use Cura as my slicer. This printer ...
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