6 votes
Accepted

Patterned Under-Extrusion on Ender 3 Pro

It turns out the extruder was slipping, but not due to a nozzle or Bowden tube pressure issue. The extruder arm (?) that holds the passive wheel (as opposed to the drive gear) was cracked, so the ...
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  • 213
4 votes
Accepted

PET-G under-extrusion after changing the nozzle to a 1.2 mm d. one (Prusa i3 mk3s and PrusaSlicer v2.0)

Piecing this answer together from the comments on OP's post. Myself and R.. noted that a layer height of 0.35 mm, nozzle width of 1.2 mm, and a fairly high feedrate (200 % according to ...
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  • 876
4 votes

Ender 3 power problems, under-extrusion missing steps

This is a common issue, there are a number of problems that could cause an extruder motor on the Ender 3 to skip steps besides the stepper needing an increase in current. If the extruder motor is ...
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4 votes

Patterned Under-Extrusion on Ender 3 Pro

This is a big red flag and severely wrong: 93 had to be changed to 150 steps/mm It can be reasonable to tune steps per mm by a few percent, but needing an increase of more than 50% versus the ...
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3 votes
Accepted

Print failing at random, resulting in a "hairy" mess

After I finally had the time to disassemble the extruder and I found a possible culprit - which did solve the issue for some time. As you can see on the pictures the heater block leaked and this lead ...
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  • 181
3 votes

Ender 3 under extrusion

OK, I have my Ender 3 back to printing nice looking objects. It turns out at some point since the original bad E-stepper I must have pushed the "load settings" menu item. I set my E steps to 98 from ...
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  • 51
3 votes

Ender 3 underextrusion

The helical exterior is an indicator of a filament diameter mismatch or volumetric mode enabled for linear commands From ref: Then you probably enabled volumetric extrusion by accident. On ...
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3 votes

3D print appears to print very weak walls in long print

What you refer to as weak walls in fact are under-extruded walls. This can be caused by multiple sources, but, since the print recovers this most probably is caused by filament that is entangled on ...
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  • 31k
3 votes
Accepted

Can't print anything! Is this heat creep? (Detailed explanation & Photo)

This sounds like nothing but a bed leveling (distance from nozzle to bed) problem, though you may have introduced other problems disassembling the hotend. It's normal to have material oozing and ...
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3 votes

Inconsistent E-step calibration test results

Oops. I had replaced the tension arm, spring, and hob gear before calibrating. Turns out I attached the gear too low, so it wasn't pushing the filament through. Adjusted the gear, and calibration ...
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  • 206
3 votes

Ender 3 Pro: Flow rate drops after time

If the feeder gear has worn out, the feeder gear doesn't grip the filament, and hence slips. You would then need to compensate for a larger extrusion length, as you encountered, by e.g. bumping up the ...
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  • 31k
3 votes

Under-extrusion halfway into print - Dremel 3D45 -PETG

That's not under extrusion That is the seam, and technically it is over extruding around it. You will find that if you turn the item, you have such a spot on every layer, actually with an inner and ...
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  • 19.5k
2 votes

Anet A8 inconsistent filament flow

The skirt looks ok, which tends to rule out the most extreme flow or blockage issues. However, skirt/bottom layer can be over-squashed so not ideal for calibration. I assume this is intended to be a ...
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2 votes

Wanhao i3 stops printing after about 40 minutes

Time to check things that usually don't need checking. At this point I would check the power split. Check the power supply voltage (+12V or maybe +24V, I don't know the printer) at the controller ...
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  • 4,418
2 votes

Partial underextrusion in walls

Localized underextrusion usually means you're oozing material somewhere it wasn't supposed to go. Since you have Marlin 2.0, linear advance might help solve that, and in general right retraction ...
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2 votes

Top layers failing/underextruding on Creality CR-10

If you decrease layer thickness, you should increase bottom and top layer amount, or set it to a fixed shell thickness. The thinner the layers the more difficult to span over the infill (there is much ...
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  • 31k
2 votes
Accepted

Weird temperature graph and thermal runaway protection triggered

Periodic temperature irregularities, such as cycling between a higher temperature and lower temperature slowly enough that it spends at least a layer or two at a different temperature than other ...
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2 votes

Problems with under extrusion and clogs on CR-10

Turns out the filament was the problem, I tried printing a model with a high quality sample PLA filament I had and it printed perfectly; one of the cleanest prints I've had. Never skimp on filament.
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2 votes

Direct vs Bowden Extrusion when printing in temperature fluctuating environment

I don't think your temperature based explanation makes sense. This looks to me just like a first layer smashed against the bed, possibly too much due to nozzle being too low, followed by ...
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2 votes

Creality CR-10 problems with extrusion while printing

Without images of the problem it is difficult to diagnose, but, the described symptoms sounds as if the nozzle is too close to the bed. If the nozzle is too close to the bed, and the extruder not ...
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  • 31k
2 votes

First 3D print made up of diagonal strands

Based on your comment to the comment of 0scar: When I go to Fillament, I get: E in mm3: On; Fil. Dia. 1.750 That's almost surely the problem. Unless the model was sliced for "E in mm3", this ...
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2 votes

Ender 3 V2 under extrusion problems

This is some kind of filament stuck in the hotend tube problem. Just like "heat creep" as mentioned above. PTFE pipes should be checked, all parts should be carefully cleaned. I also add ...
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  • 106
2 votes

Ender 3 extrusion not working properly

200°C is way too cold for printing PETG, especially with the Ender 3's weak extruder (ungeared, single flat hob with minimal contact with the filament) that already struggles with PETG. Probably it ...
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2 votes
Accepted

Ender 3 v2 layer skips

This is a known issue with the v4.2.2 mainboard relating to overheating. Continued overheating will eventually result in the extruder controller on the mainboard going bad. Solution: Mainboard change ...
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2 votes

Evenly spaced bulges and one spot of localized underextrusion

The horizontal bands are 5mm apart, which is a common pitch for the screws often used for the Z axis. I would look for something that binds, moves, slips, or touches once per screw revolution. The ...
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  • 4,418
2 votes

Under-extrusion halfway into print - Dremel 3D45 -PETG

"Prime Amount" sounds like "extra prime on unretract", which necessarily deposits a blob of extra material at the location of unretract, including the Z seam. Setting this to zero ...
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2 votes

Missing filament at Z seam

Several things to try: Dry your filament. Wet filament can have trouble resuming after retract due to moisture absorbing all the heat and slowing the melt, and can also drastically increase internal ...
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2 votes

Missing filament at Z seam

Posting my own solution here The seams are printing normally now and the solution was simple. The extruder gear was not gripping the filament correctly during retractions and was slipping as a result. ...
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  • 141
1 vote

Stringy first layer (possible extruder issue?)

The first photo shows under extrusion. This could indicate either a bad filament, a massive clog or the wrong filament diameter in the slicer. I have experienced, that small demo-reels of filament ...
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  • 19.5k
1 vote
Accepted

Top layer and walls have gaps even with 120 % flow (Cura)

You are lowering temperature and increase the flow at the same time - which is contradictory (filament is less runny, but you pump more of it). Though 195 °C seems to be very safe for printing PLA at ...
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  • 916

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