Questions tagged [pla]

Polylactic Acid, also known as PLA, is a common biodegradable thermoplastic polymer.

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votes
1answer
34 views

Print gets worse with every layer - Ender 3

First of all, I'm still new to this 3D printing and I've bought myself a second hand Ender 3 with some mods done to it. I've successfully printed with PLA in different colors. But now the succeeds ...
2
votes
1answer
60 views

The filament is almost impossible to remove

Most people complain about the filament not sticking on build plate but mine is vice versa. At first it used to be very good. When I removed the magnetic bed the project would come off easily but for ...
3
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6answers
6k views

Flashforge Adventurer 3 Filament feeder loud thumping noise, not enough filament extruded

My Flashforge Adventurer 3 is not printing properly. Filament feeder makes repetitive loud thumping noise and not enough filament is extruded. Resulting print (if completed) is not solid. Results ...
0
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1answer
14 views

CTC i3 Y-axis thin / no filament deposition

I have this CTC i3 printer; when I print square test prints, as it moves along the Y-axis back to zero (front). It extrudes lines but very thin or none at all. But opposite direction along the Y axis ...
3
votes
1answer
579 views

Fixing Z-Hop Stringing

I'm printing a model on my Ender 3 in Mika3D Silk PLA, which (just for reference, this is not atypical) has a stated temperature of 200 °C to 235 °C. I have used this filament before ...
0
votes
2answers
73 views

3D Print something as flexible as a cloth with PLA?

Would it be posible to design something that is as flexible and that can be printed with PLA that would work as a cloth? I did some research and found that there was a company named Electroloom but ...
2
votes
1answer
70 views

Inconsistent printing results using same settings but different calibration models

I've got a second-hand Renkforce RF1000 which I've gone into more detail about in this question. The extruder works however, I get some inconsistent results. First I printed a calibration cube and ...
15
votes
6answers
6k views

How to remove white marks from PLA

When you cut or break a PLA model (for example to remove support) it often leaves an ugly while mark where the removed piece was connected. Sanding also tend to leave dull white scratches on the ...
4
votes
3answers
2k views

Bowden tube clog

There's PLA filament clogged in my bowden tube, is there a best practice for cleaning it out or do I need to replace the whole tube? Also the couplings are totally stuck :S - so I guess those would ...
3
votes
1answer
114 views

Why does PETG require slower speed?

PLA has a heat capacity of 1.8-2.1 J/g-K, while PETG 1.1-1.3 J/g-K. This means that each gram of PLA needs more energy to heat up. I assume no "melting latent energy", since we talk about plastics. ...
1
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1answer
94 views

Prusa MK3S 0.8 mm nozzle layers separating

I am currently printing a simple cup out of PLA (I will later anneal it). My nozzle is 0.8 mm and I'm using a 0.4 mm layer height. Unfortunately, the layers keep separating. They don't ...
4
votes
5answers
8k views

Prints falling off the bed towards the end of the print

I have been trying to print an object that is 4 inches tall. About at 3 inches it falls off the bed. I am using tape on the heated bed and right before the print I am wiping the bed with rubbing ...
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1answer
66 views

Prusa MK3S weird 'Blobs' on PLA print surface

This is the first time I've run into this problem and it seems very confusing. I wanted to print a simple functional part out of PLA and although the first few layers were fine, the 6th/7th layer ...
3
votes
1answer
976 views

Is PLA safe for masks?

So in light of the in going pandemic, I have begun printing masks for my family and a few friends. As I was printing them the thought occurred to me, "Is PLA safe to be breathing off of?" So that is ...
1
vote
1answer
52 views

Problem printing circles/holes on Anycubic I3 mega

For some time I've been struggling to print models with holes going all the way through from top to bottom. Models without those holes print out just fine. I've spend quite some time on levelling the ...
1
vote
1answer
277 views

Odd print artifacts on same layer as large top surface

I printed the following object (I'm printing the single opening version, Flower_pot_3.STL), and observed an unusual print artifact. I would like some idea of what's going on so I can avoid it in the ...
14
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2answers
35k views

What glues for PLA?

I will be creating a small tube styled piece to use as a junction between two pieces of plastic. The idea is to reattach the two pieces and provide strength so they don't break apart again. I plan on ...
2
votes
1answer
82 views

My first layer becomes solid when sections are supposed to have small separations

I've only been 3D printing for a few weeks and most of my prints seem to come out fine, but when I try to print models which require a small clearance between sections of the model, e.g. various ...
3
votes
2answers
923 views

Reasons for a PLA print not sticking to bed all the sudden?

Plastic: Same Matterhacker PLA (filament I use every day) Printer: Anycubic i3 Mega (the one I use every day) Slicer: Ultimaker Cura 4.2.1 I don't know what's causing it, I haven't changed any slicer ...
2
votes
1answer
47 views

How can I solve the problem of line distortions on my prints?

Hello guys I have a little problem with printing. Whenever I print something there are always these lines my printer does, it's not a very big deal, but it looks rather ugly and I'd really appreciate ...
0
votes
1answer
55 views

Why can't I use PLA with ABS in a dual extruding 3D printer?

I have a XYZ Da Vinci duo and I want to run water soluble PLA with ABS How can I do that?
1
vote
1answer
248 views

How to smooth PLA Prints without using sandpaper, solvents or paint

I need to smooth some prints with silk PLA filament. The silk PLA has a nice translucent effect but unfortunately if sanded results in an horrible matte finish regardless the sandpaper grade (I have ...
7
votes
2answers
6k views

missing small sections of layers after a retraction

So I am missing small sections of a layer when it prints, after a retraction for a layer change or a move, the extruder stops moving (no it isn't clicking or anything else. Just not moving). Which is ...
1
vote
2answers
123 views

Does moisture cause warping?

I'm printing flat objects (like rectangular) with PLA on a glass bed and 70 celcius degrees (also tried 75 celcius too, 65 celcius and lower ends with adhesion problem in general). Also I use brims ...
2
votes
1answer
506 views

PLA chemical resistances? Especially HCl, other acids

I'm interested in 3d printed reaction chambers, but can't find any good information on chemical resistances of PLA, just vague claims that it "might not be" "because it's biodegradable" or that it ...
3
votes
3answers
79 views

Model stuck on the heating bed

I've tried to apply a sharp blade (the one that came witht he printer) to scrape the model off like I usually do but this model seems overly robust. What method can I do to take this off safely? See ...
2
votes
2answers
159 views

Top layers failing/underextruding on Creality CR-10

For some reason the only the top layers keep failing or underextruding on my prints, for no clear reason. Here are my settings: Slicer: Simplify3D Filament: 1.75 mm Black PLA from Filamentive ...
1
vote
1answer
565 views

Filament spreading apart and stringy on first layer

I keep having this issue on prints where the first layer has stringy lines that don't stick together. I've tried the following things Replaced nozzle and throat Used new filament (to rule out ...
2
votes
3answers
678 views

Why does my PLA filament keep snapping?

Why does my 3 mm PLA filament always snap near the spool some time (usually a few hours) after a print has finished? I have had it snap mid print but this is quite rare. I have 3 rolls of 3&...
3
votes
2answers
4k views

How to remove exess filament from bed after removing model

Recently got an Anycubic I3 Mega Printer and I've been playing with what it can do, but after a model is done it leaves residue on the build plate behind that is bugging me. Do I NEED to remove it? If ...
7
votes
1answer
2k views

How to eliminate stringing and regulate flow rate?

I have been having a problem with stringing on my 3D printer, so initially I increased retraction distance from 6.5 mm to 8 mm. Then I tried again, with the same issue, so I increased ...
9
votes
2answers
15k views

Any fix for PLA prints getting more brittle over time?

I've been printing small quantities from a PLA filament spool on a Craftbot printer for about two months now. Recently the printed objects have been coming out very brittle. Some structures that ...
2
votes
0answers
52 views

Shell detaches from the rest of the part

I'm printing with a Prusa MK3, with the following settings: 3 perimeters 50 % infill infill overlap: 50 % The filament is Polyalchemy emerald green (PLA). Nozzle temperature: 210 °C. ...
4
votes
4answers
589 views

Smallest dot/dot indent for Prusa MK3S using PLA

I want to make a project involving many small dots indents and I would like to know how I can calculate the smallest dot hole the Prusa i3 MK3S can extrude around on a layer using PLA. In other words, ...
2
votes
2answers
4k views

PETG Sticking to Nozzle

For a while now, my AmazonBasics PETG filament has been working like a charm. Now, it is balling up on my nozzle. I've tried slowing it down, re-leveling the bed, etc. I don't want to go through the ...
6
votes
2answers
3k views

Getting bumps/warts on surface, Cura doesn't want to comb?

I have not been able to print smooth and round shapes using Cura 3.3.1 (or earlier) without bumps. I think they are seams? The filament is PLA. Combing is enabled, which I thought makes it so that ...
3
votes
2answers
197 views

Build plate adhesion, PLA

Am just wondering if any conclusions can be drawn from this: Three corners are solid, but not the one in the centre of the plate. The bed was levelled before printing (and checked afterwards also). ...
3
votes
1answer
302 views

overlaying epoxy resin on PLA

I've been experimenting with FDM 3D printers and PLA for about a year now. I'm at the point where I'd like to produce something considerably stronger than PLA, and was wondering if there is a faux-pas ...
10
votes
4answers
5k views

Why keep the bed heated after initial layer(s) with PLA (or PETG)?

I'm printing on an Ender 5 with the default flex/magnetic build surface. I read that PLA and PETG may sometimes be printed without any bed heating at all and also that bed heating is the main ...
4
votes
1answer
2k views

Ender 5: Bowden tube shifts in/out of extruder during retractions

I have an Ender 5 with an aluminum extruder that was printing beautifully for a few days after building it. I received a Capricorn bowden tube and new couplings as a gift, and replaced those, and now ...
6
votes
2answers
626 views

Why doesn't PLA stick to heated bed?

I have a basic Creality Ender-3 with a black rough bed cover. I'm printing with PLA. After assembly, I printed 3 or 4 small toys sliced by Cura with basic settings. All were printed very well! ...
3
votes
2answers
98 views

Technique for removing support from Ultimaker 2+?

I have made some prints with the Ultimaker 2+ and Ultimaker 2 Extended+. The prints are in PLA. For slicing, I use Cura and I check the support checkbox (haven't gone to advanced settings to adjust ...
2
votes
4answers
669 views

How do I get circles on small interior holes to adhere to the bed?

I’m using a RepRap printer, PLA (Hatchbox 1.75 mm), SketchUp, and Slic3r. The heated bed is covered with a blue polyester sticker. When I print small holes (1 to 1.5 mm radius), slicer software ...
6
votes
3answers
130 views

PLA printings always ~0.22% larger

I was trying to print parts for a small CD-ROM drive based plotter based on this thing https://www.thingiverse.com/thing:3521286 But as tolerances are very small and need to match the existing parts, ...
4
votes
1answer
3k views

How to fight lots of stringing with PLA at low temperature (185 °C)?

I just got my first 3D printer (Creality Ender 3) on Friday, 2 days ago. It works great, but for some reason I'm getting a lot of stringing on my prints, especially the ones where the extruder head ...
5
votes
1answer
176 views

PLA Filament Not Softening During Load w/ FlashForge Creator Pro

Recently, after printing fine for several weeks, I've gone to load in white PLA filament into the right extruder on my FlashForge Creator Pro and the extruder is not pulling the white PLA filament ...
2
votes
1answer
222 views

Making Polyurethane molds with PLA (or ABS) 3D printed master

I want to make Polyurethane molds for concrete using 3D printed PLA or ABS master object. like this video: (this video is not about concrete of course!) I'm not sure ...
2
votes
0answers
78 views

E3D V6 PLA prints leaning / not square

When printing a 1 cm test cube after upgrading to the V6 the cubes are tilted ever so slightly. This does not happen with the stock MK8 hotend, or when printing with the V6 with Polycarbonate+...
5
votes
4answers
761 views

First Layer problems?

I am using the E3D v6 hotend with the titan extruder. Everytime I go to do a test print, just enough stringy filament oozes comes out of the hotend "right before" it lays down the first layer. I have ...
6
votes
2answers
2k views

Is Tetrahydrofuran viable for dissolving PLA and sticking PLA objects together?

According to Wikipedia, Tetrahydrofuran dissolves PLA. It also apparently dissolves PET. THF is considered a relatively nontoxic solvent, with the median lethal dose (LD50) comparable to that for ...

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