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29 votes
Accepted

Can aged PLA be refurbished?

The easiest way to freshen up filament is hot air, although there are other options. There is an optimal melt processing moisture level for every plastic, typically in the range of 0.1-0.2% water ...
Ryan Carlyle's user avatar
  • 6,616
23 votes
Accepted

How does one use a heat tower?

When you slice an STL of a heat tower, you need to tell the slicer that you need a different temperature at a certain level and maintain that new temperature until another change is requested. The ...
0scar's user avatar
  • 36.2k
18 votes
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Is PLA filament conductive?

Normal PLA is non-conductive. You can take an $\Omega$-meter to a test part if you're really concerned somehow you have some PLA that is conductive. There is a caveat that your color may include metal ...
Barron B.'s user avatar
  • 196
17 votes
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What to do with failed/unwanted 3D prints?

The "obvious" answer is re-grinding the prints and making more filament. Unfortunately, this isn't yet a very economical or simple operation. A decent filament extruder capable of holding acceptable ...
Ryan Carlyle's user avatar
  • 6,616
15 votes
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What is PLA+? How is it different from PLA?

Disclaimer: I am not affiliated with any linked brand or company, I just link to them for reference of the suggested print settings. What is PLA? PLA is, by its definition PolyLacticAcid, a polymer of ...
Trish's user avatar
  • 22.2k
15 votes
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Filament isn't going into the Bowden tube, instead it goes "into the room"

This is typically caused by resistance in the tube or hotend but in your case it appears to be mostly caused by a very poorly designed extruder. The filament needs to be constrained closer to the ...
tjb1's user avatar
  • 2,110
14 votes
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PLA wood filament: a special treatment?

PLA and wood fibres = wood filament Most wood filamet consists of about 60-70 % PLA and 40-30 % wood fibres. This basically implies that PLA temperatures should be used. It can be printed with ...
0scar's user avatar
  • 36.2k
13 votes

Is PLA filament conductive?

PLA itself falls in the category of non-conductors, with a resistivity ($\rho=R\frac A l=\frac 1 \sigma$) in the order of $10^{16}\ \Omega \text m$ (see here), similar to other plastics. Following ...
pasaba por aqui's user avatar
13 votes
Accepted

POM filament not sticking to the build plate?

Great material but very hard to print as it does not stick easy to the build plate as it has a low friction coefficient to grip onto the heated bed. Also, the material sets quite fast, once the ...
0scar's user avatar
  • 36.2k
13 votes
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A vertical scar on the print surface, what is the name of this problem?

This is the Z-seam, or just "seam". It's a consequence of the fact that the extrusion of each layer has to start and stop at some point rather than being a continuous path for the whole ...
R.. GitHub STOP HELPING ICE's user avatar
11 votes
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What is stopping us from mixing 3D filament colors in an Extruder?

I just started with google and phrase "3d printing color mixing" and on the first place (in fact first two were valueless adverts) I got this Instructables - DIY Full Color Mixing 3D Printer. How it ...
darth pixel's user avatar
  • 3,476
11 votes
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What do I do when I have a little filament left?

Heat the extruder up first, then remove the filament. You can remove the filament either by reversing the extruder using a command such as G1 E-100 F200, by using ...
Tom van der Zanden's user avatar
10 votes
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Why does my PLA filament form a spiral shape and clog my extruder?

The shape you get is quite easy to explain. It's the shape of the lowest energy possible in your situation. Simple but it doesn't explain the issue... or does it? It does. The filament cannot be put ...
darth pixel's user avatar
  • 3,476
10 votes

What to do with failed/unwanted 3D prints?

It will be very difficult to find a recycling facility that will accept your 3D prints, because they're mainly set up to handle packaging material (which constitutes the vast majority of plastic waste)...
Tom van der Zanden's user avatar
10 votes
Accepted

Why is PEEK filament so expensive?

My assumptions about PEEK filament price are: Raw material is more expensive. Compare price of ABS with PEEK pellets. Demand is much lower. There are not many printers able to print peek. If you ...
amra's user avatar
  • 1,941
10 votes

Filament isn't going into the Bowden tube, instead it goes "into the room"

Your extruder is encountering resistance and the filament path is too open. Your teeth seem to be biting in too hard. Loosen up your tensioners a bit. Teeth biting too hard deforms the filament. ...
silver's user avatar
  • 249
9 votes
Accepted

How many grams will be used in a print

You can not tell this by looking at the STL file alone, because how much material will be used depends on the print settings (obviously, printing at 100% infill will consume much more material than 10%...
Tom van der Zanden's user avatar
9 votes

How can I avoid that a small bit of filament sticks out of the nozzle during heating?

I normally print a skirt. This acts as a quality check for: flow rate; bed adhesion; bed level; and proper zero position in the Z.
Davo's user avatar
  • 2,440
9 votes

Printing with colorfabb XT fails after several successful layers

This looks a lot like under extrusion caused by heat creep. Heat creep is when the nozzle temperature 'creeps' up through the filament and makes it melt (a bit) and form a blob (or just widen enough ...
Valmond's user avatar
  • 914
9 votes

Why is PEEK filament so expensive?

Patents still seem to play a role as well. I was curious about this question and did a bit of research: If you filter the U.S. patents after 2010 mentioning PEEK and its various applications and ...
typo's user avatar
  • 936
8 votes

Does wood filament damage the printer nozzle?

Wood PLA is too abrasive for a brass nozzle and will wear it out until it becomes a straight pipe after about 12 hours of printing with it. This answer is based on first hand experimentation. I'm ...
Routhinator's user avatar
8 votes

Is there any way to shrink 3 mm filaments down to 2.85 mm?

I would not recommend you to try and somehow re-size the filament, since even the smallest of irregularities and error in diameter occurring from such a process would ruin your prints with sporadic ...
Tormod Haugene's user avatar
8 votes

How is PLA different from ABS material?

The problem is that it's almost impossible to answer the PLA/ABS question just by looking at the material characteristics as it is so dependent on the application and even the specific object you're ...
FilamentGuy's user avatar
8 votes

Pulling filament through long tubes

I would say it's not the best approach. In the situation you've described I would rather install some kind of vertical ring a bit above your printer. This ring would organize your filament going ...
darth pixel's user avatar
  • 3,476
8 votes

Any fix for PLA prints getting more brittle over time?

PLA absorbs moisture, so keeping the filament dry is a key factor. Aside from that, PLA is naturally more brittle than other plastics like ABS and Nylon Sorry, tried to find a graph to prove it, but ...
tbm0115's user avatar
  • 6,324
8 votes

What is stopping us from mixing 3D filament colors in an Extruder?

The three in one print head is the closest to your concept of gradient printing and does some nice transitions. But does not meet your color mixing. Which I assume your looking for there is ...
spicetraders's user avatar
8 votes

What causes bubbles in extruded filament?

In my experience, bubbles like this are caused by the filament absorbing moisture, which then cooks out at the high printing temperatures. See: http://reprap.org/wiki/...
Davo's user avatar
  • 2,440
8 votes
Accepted

What causes bubbles in extruded filament?

Oh yeah, that's simple. You are printing too hot and are literally boiling the plastic. Else you have water. However if it was water you would hear Crackling as it printed. If it is too hot you will ...
StarWind0's user avatar
  • 3,113
8 votes
Accepted

Is there any reason *not* to use a steel nozzle for printing all materials?

Thermal conductivity of brass is approximately twice as better than steel (not stainless). Given that the size of nozzle is relatively small, it should be able to transfer enough heat for a medium-...
Mikhail Z's user avatar
  • 888
8 votes

Can I print in wax?

Yes, you can. But no, you don't need to make your own filament for it, there is one called Print2Cast that you can buy for about 50$/kg. This filament has the following recommended slicing settings: ...
iFreilicht's user avatar

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