20 votes

Isn't using the Extrusion Multiplier like cheating?

No, the Flow rate or Extrusion multiplier is to compensate for different materials and temperature ranges. Where does the factor come from? Let's say we calibrated our nozzle for work at 200°C with ...
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  • 19.5k
16 votes
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What are the reasons for my 3D prints having large numbers of strings between parts of a layer?

Stringing is often a result of too-high a temperature, or insufficient retraction. When there is highly liquid filament in the nozzle tip, it can adhere to the remainder of the print while dripping as ...
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  • 832
14 votes
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Slicer line width vs. extrusion multiplier for layer adhesion?

Generally speaking, both settings result in the same1: The feed rate of the filament gets adjusted. Either you set a general multiplier, or you demand a wider line which does make it set a higher ...
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  • 19.5k
13 votes
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First 3 mm prints poorly, then fine after that

After much trial and error, I think I finally figured out the solution. Even though I could get better prints by tweaking with the temperatures, I could never totally eliminate the problem. The ...
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11 votes
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Print came out like a wafer

The phenomenon you experience is called under-extrusion. Under-extrusion is the effect of extruding lesser filament than required for the print. The result of under-extrusion (depending on the amount ...
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  • 31k
10 votes
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I am experiencing some severe under extrusion

Assuming your filament dimension settings are correct and your extruder is correctly calibrated... Your extruder temperature may be too low. While 184C can be hot enough, it is very near the bottom ...
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10 votes
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How do I keep my extruder head from getting clogged?

Different types of hotends and extruders can lead to different problems associated with clogging. Based on my personal experience the leading causes of clogs and jams are the following Foreign ...
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9 votes

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

Here's just a few of the things you might want to look into. plastic - some plastic types are more stringy than others and there's also variation between brands and colors. moisture in filament - ...
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  • 668
9 votes
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Holes/ missing layers (after retraction) in 3d printed objects

(answering my own question) The problem was the extrusion distance settings in Cura's advanced tab, reducing the value to 1.5mm solved the problem. Other problems with the same symptoms: Partially ...
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  • 2,381
8 votes
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Extrusion adjustment

SHORT ANSWER You're not supposed to do the single-wall perimeter thickness test to calibrate Simplify3D. That screws up the extrusion volume. The correct volume calibration procedure for S3D is: ...
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  • 6,446
8 votes
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Would a really short melt-zone be beneficial

There is a trade-off between the length of the melt zone and the speed at which you can print. The filament itself is somewhat of an insulator, so as the outside of the filament is heated up by being ...
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8 votes
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Hemispherical Bowl : how is it possible?

There are several factors playing together. For example orientation, printer & slicer settings and more. Reminder First of all, not all overhangs of greater than 45° need support. Many printers ...
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  • 19.5k
8 votes

First 3 mm prints poorly, then fine after that

I had the exact same problem as you. And after trying all of your ideas (Thanks so much for the amound of information!!!), I discovered that in my case, the problem was actually the printer skipping a ...
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  • 81
7 votes
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How thin can my extrusion be from a 1.2mm extruder?

The main issue with very narrow extrusion widths (less than the nozzle size) is that you get really poor "nozzle squash." The plastic isn't pressed down very hard as it's extruded. That causes poor ...
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  • 6,446
7 votes
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Filament extrudes at an angle

I've personally had this happen when I had a minor clog in my nozzle. My first steps to fix this would be: Make sure the exterior of your nozzle is clean. I've had bits of plastic pull at the ...
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7 votes
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How is the E argument calculated for a given G1 command?

Basically, all movements are (small) straight lines, the volume of a straight line is easily calculated as you already guessed. To calculate the volume to be extruded you multiply the following ...
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  • 31k
7 votes
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Extruder doesn't retract on inner wall lines thereby causing stringing

Cura has a setting called Combing that is enabled by default. This stops the printer from retracting if the travel is contained within the walls. It does this to ...
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7 votes

Isn't using the Extrusion Multiplier like cheating?

In addition to the very detailed answers above, I would like to mention that the hardness of the filament plays a role too. Most feeders are spring loaded, therefore it depends on the hardness of the ...
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  • 301
7 votes

Print came out like a wafer

Underextrusion. I suggest upgrading to Cura 3, as you are working with a version 1.5. If you print PLA, you print WAY too hot (190-200 °C Nozzle, 60 °C Bed), if it is ABS, knock down the temperature ...
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  • 19.5k
6 votes

How do I keep my extruder head from getting clogged?

Lubricating the filament is the most common solution I've heard of to stop filament jams and clogs. Lubricating makes for a smoother ride through the print head. While you're at it, make sure that the ...
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  • 1,316
6 votes

Filament extrudes at an angle

If you're extruding into the air, it's actually quite normal for the filament to come out in seemingly random directions. This shouldn't cause problems because the filament should always be getting ...
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6 votes
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Hot end jamming very quickly

You are suffering from what is called "heat creep". Molten filament is creeping up the heat break and into the bowden tube, where it is causing a jam. You need to install a proper radiator block that ...
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  • 2,972
6 votes
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How can you calibrate extrusion multiplier value in Slic3r WITHOUT changing printer settings in memory?

Divide the amount overextruded by the desired amount. If you wanted 100mm but got 101mm, that's 1mm extra, or 1% over. Use an extrusion multiplier of 0.99 (1% under) to compensate - AND THEN DO ...
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  • 2,282
6 votes
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Unknown issue affecting print quality

A very helpful page for troubleshooting common errors is: Print Quality Troubleshooting Guide - Lines on the Side of Print It seems like your problem is inconsistent extrusion or temperature ...
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  • 522
6 votes
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Print Lines Aren't Joining Together

It is hard to tell from the quality of the picture you added, but this appears to be an example of either an incorrect height setting for your nozzle to touch trigger point (too large) or an under-...
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  • 31k
6 votes

Power consumption of filament extrusion

This is very simply stated, in fact the specific heat is a function of temperature and state of the material (liquid or solid). Also you need to consider which type of specific heat you use, e.g. the ...
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  • 31k
5 votes

How do I keep my extruder head from getting clogged?

As general advice, regardless of your printer, extruders tend to clog if: [Some of them might not apply to every printer, but they should be as general as possible] you let the filament run out mid ...
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5 votes

How to connect filament end-to-end?

You'd have to ensure that the joining portion of the two filaments do not "bloom" or increase in diameter, which would happen if unconstrained at the melting and joining time. Alignment is also ...
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5 votes
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Weight Reducing Design Change for Extruder Driver

Very cool idea, One motor would definitely be more than capable of producing the required torques even through a flexshaft connector. For any normal sized 3D-printer the torques required, and the ...
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  • 1,855
5 votes

Extruding a (wall?) in Fusion 360?

I think the command you're looking for is "Thicken". Recent versions of Fusion360 have moved this around, but now it should appear under the Create Panel when you're in the the Model mode (see the ...
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