3D Printing Stack Exchange
3D Printing Stack Exchange

Questions tagged [extrusion]

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

For questions about proper techniques and troubleshooting of 3D printer extrusion settings, maintenance and types.

173 questions
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What are the reasons for my 3D prints having large numbers of strings between parts of a layer?

I am printing a print using PLA on a Prusa i3 printer and an MK8 extruder, at 210 degrees celsius, 60 mm/sec, sliced with slic3r. The print consists of a base, with 4 tower-like projections that then join with a near-vertical overhang slope that…
nanofarad
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Filament extrudes at an angle

On one of the nozzles on my printer, the filament comes out at a 45 degree angle. It seems that this causes problems with adhesion to the bed and overall quality. What caused this problem? How do I fix it? How do I prevent it from happening in…
Eric Johnson
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How do I keep my extruder head from getting clogged?

Using a thermoplastic MDF printer with a 0.4mm extruder nozzle, I frequently have trouble with the nozzle getting clogged. I am not sure what's causing the clog, but my guesses are dust and/or burnt filament (from leaving the hot end on without…
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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 print comes out "sloppy". After that, everything clears…
Steve In CO
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5 answers

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 extrusion movements (...) CURA: The amount of…
tollo
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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 for layer to layer adhesion? This question has a…
0scar
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Under extrusion towards the end of the print

I have really strange problem. Thing is that my print (first layer) started ok, not good nor perfect but ok and everything was going well but then all of a sudden, near the end of a print, quality drops drastically. I'm not really sure but I think…
Rakic
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Holes/ missing layers (after retraction) in 3d printed objects

My printed objects have horizontal holes in them (as seen I the picture below): This doesn't only look bad it also makes the object break at the seems. Looking carefully at the printing process I can see that after a retraction there's a small…
Nir
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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 to print the inner lines of the section it does…
Liam
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Finding a shredder for my failed prints

I would love to re-use my failed prints by re-extruding the plastic to be used in the 3D printer once again. One thing that stands in my way is finding an effective way to shred the plastic into smaller bits for the extrude to use. What is a good…
Ljk2000
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How thin can my extrusion be from a 1.2mm extruder?

I always assumed that the smallest diameter that you could extrude was equal to the diameter of the extruder tip itself. Recently I heard that you can actually extrude a line that's as little as half the width of the nozzle opening. Is that true in…
Mar
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Which type of extrusion problem?

I'm a novice in 3D printing. I have a Lulzbot Kittaz 3D printer with a hexagonal hot end of 0.35 mm. I have printed a test subject, and while I was printing I encountered this extrusion problem. I'm using ABS with 230 °C hot end temperature and…
Veda
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7 answers

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-10 starts under extruding and after like 1 minute,…
user12769
8
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5 answers

Why is my 3D printer over extruding when I have set the flow rate very low?

I am using Cura to slice my prints, and despite turning the flow rate to the minimum value of 5%, my prints are still hugely over-extruding. I have calibrated the extruder stepper perfectly, using Pronterface, so I do not understand why this is…
Joe Clinton
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8
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2 answers

Hot end jamming very quickly

I have built a 3D printer out of parts from my tip, a ramps board, arduino mega, and a hot end. However, after doing a test extrusion some plastic was spewed out and then the print jammed un-expectantly and my homemade extruder no longer had the…
Joe Clinton
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