Questions tagged [pla]

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

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6
votes
4answers
4k views

Should you use hairspray on a metal bed 3D printer?

I've heard that using hairspray is useful for keeping the 3D objects from peeling off of the bed, but every example I have seen where someone uses hairspray, they use it on a glass bed. Is it okay to ...
21
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4answers
56k 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 ...
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3answers
39k views

Can you put PLA parts in your car (in the sun)?

I'm in the process of building my own head unit / stereo prototype for a car, which will have a 3D-printed enclosure. My concern is that cars can get quite hot in the sun, and even more so if you ...
13
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3answers
34k views

What causes ripples on part of first layer?

I'm having issues with ripples on the first layer of big flat prints. The initial corner of a big flat print is fine, but then ripples begin to form as shown in the screenshot. I'm just a newbie, so ...
33
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2answers
2k views

How to recycle filament material from printed parts?

Is it possible to re-use ABS or PLA filament material from printed parts? If so, what is the techniques to reform it?
9
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2answers
22k 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 ...
4
votes
2answers
2k views

How to remove unwanted filament trails from sharp corners

I'm a 2-week newbie at 3D printing, working on a new Qidi Xpro machine (that is solid and one that I like). So, I do not want to believe that this issue is caused by my printer itself. I'm hoping that ...
23
votes
5answers
4k views

Does filament have to be stored in an airtight environment?

For standard ABS and PLA filament, most distributors recommend storing the filament in an airtight bag. Does not doing this actually make print quality worse? I have left mine in the open for a year ...
5
votes
1answer
2k views

How can I stop the flare out of the bottom layers?

On nearly all of my prints, my first few layers are flared out slightly. I'm using painter's tape for the bed, and the bed temperature is at 60 °C while the extruder is at 205 °C. ...
55
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9answers
90k views

How do I give 3D-printed parts in PLA a shiny smooth finish?

The surfaces of my printed parts using PLA plastic look rough and uneven. Would changing filament to a better one make any difference? If not, what kind of methods can I use to achieve a smoother ...
25
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6answers
62k views

What is PLA+? How is it different from PLA?

Question What is PLA+? How is it different than PLA? I'm looking for science, composition, formula, safety concerns (or lack thereof), etc. Background I picked up a roll of PLA+ at Microcenter (...
19
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5answers
10k views

Can aged PLA be refurbished?

Inspired by another question and due to the fact that some of my filament will face the same problem when I will use them again, I wanted to know if there are proven recipies to get rid of water that ...
11
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2answers
15k views

PLA use outdoors?

I have been using PLA filament for two years now and have had good prints. ABS on the other hand has not been so good, so my choice of filament is PLA. I am getting ready to do a sign for the ...
9
votes
1answer
1k views

Do I need a heated bed for printing PLA in an enclosed printer?

I am planning on building a large enclosed (Cartesian XY-Head) 3d printer. I want to keep the inital build time minimal and it is very likely I would need to build the ~50x50cm heatbed from scratch, ...
7
votes
2answers
5k views

Why does my part-cooling fan cause stringing?

Really strange observation with my MP Select Mini V2 printing PLA. I've printed a dual-fan shroud so I can have a dedicated part-cooling fan. I've noticed that when I turn it on, the extruder starts ...
6
votes
2answers
6k 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 ...
4
votes
2answers
1k 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 ...
9
votes
4answers
13k views

ABS or PLA for structural printed parts?

TL;DR Is ABS a better material to use for structural parts of a 3D printer, as opposed to PLA? I have been looking at various suppliers of printed parts for a Wilson II, on eBay. One supplier ...
6
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2answers
3k 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 ...
5
votes
4answers
2k views

Heatercartridge bolt stuck

After a brownout a print failed and it got the whole hotend covered in PLA. I am now in the process of replacing some parts on the hotend (one of the thermistor legs broke of) and also wanted to take ...
3
votes
2answers
2k views

Expansion in bottom skin after first layer

I'm having an issue where prints with narrow tolerance come out fused. This makes it pretty much impossible to print anything with narrow parts. It seems to be mostly (maybe only) an issue in the ...
38
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5answers
4k views

How is PLA different from ABS material?

What are the main differences when using ABS over PLA and vice versa?
14
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5answers
16k 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 ...
10
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3answers
8k views

Why does my PLA filament form a spiral shape and clog my extruder?

I'm using brand new PLA filament and am getting frequent clogs in my extruder. I've had this problem with 2 different filaments from 2 different vendors. It will be print just fine, then clog up. ...
20
votes
4answers
13k views

What to do with failed/unwanted 3D prints?

I am planning on getting a 3D printer soon and I was just wondering, what do you do with 3D prints that either failed or were prototypes that you no longer want? I tried looking online but the closest ...
5
votes
3answers
645 views

How to unclog a clogged extruder?

I have a Wanhao Duplicator i3 v2 (A.K.A. Maker Select, Cocoon Create). My extruder got clogged: I noticed that it wasn't extruding, so I stopped my print, removed the fan, heatsink and the extruder ...
8
votes
2answers
5k views

Getting PLA to stick to a cold bed

Right now my heated bed is down and I had no time to try and fix it and I am trying to print something for a friend. I am having the PLA lift around the edges which I have NEVER experienced. The glue ...
6
votes
2answers
13k views

What are the costs per meter of filament for PLA, ABS and PET?

My Craftbot Plus Craftware slicer estimates cost per job based on filament prices I add as parameters. What costs per meter would you use? I created spreadsheets to calculate this for 1.75mm ...
3
votes
2answers
8k views

How do you solve PLA corner-curling short of printing really, REALLY slow?

I've been trying a lot of different things to combat corners curling upward in the first few tens of layers after the bottom skin. To be clear, I'm not talking about corners of the first layer printed ...
3
votes
1answer
2k views

What's smoother? Acetone treated PLA or ABS

From my understanding, both PLA and ABS can be treated with acetone to make them smoother. So when they are treated with acetone, which is smother PLA or ABS or are they about the same? When I ...
3
votes
2answers
2k views

PLA continuous operative temperature

For personal usage, indoor, I'm doing some experiments with following lamp (v0.1): Lamp is a led bulb enclosed in a methacrylate tube and with a 3D printed finish at the top using PLA (my first 3d ...
9
votes
3answers
1k views

Can I really throw failed PLA prints on compost?

So they say PLA is biodegradable. But I still don't know how much biodegradable. I live in a flat and we have composting trash can in the courtyard. However if I throw PLA in there and it does not ...
8
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6answers
14k views

3D printing problem: waved walls

The problem When I print with my mElephant 3D printer from Makeblock, the prints come out with waved walls like in the picture below. I am using PLA filament from https://makeblock.lt What I tried ...
8
votes
1answer
3k 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 ...
5
votes
3answers
878 views

Small part bed adhesion

I am trying to print a model that has (at the start of the print) several small parts attached to the bed. Some of these parts have bed contact 2.5mm x 20mm. After a few layers, if there are any ...
5
votes
3answers
7k views

How to remove a PLA print stuck to a BuildTak sheet

BuildTak is great because the printed plastic really sticks to it, it pretty much solved all the problems I had with prints detaching from the buildplate during printing. However, it does sometimes ...
4
votes
2answers
456 views

Printing starts well but then it breaks down, Anet A8

I'm printing a cylindrical piece but at any moment it breaks down. I tried it two times, both have break down in different place. I'm using a 1.75 mm PLA filament in my Anet A8. I'm using Cura 2....
3
votes
1answer
114 views

Height of the prints are always larger

This problem is driving me crazy, no, seriously speaking. I bought this printer this week and started to calibrate for accurate dimensions. I printed the one-and-only calibration cube (20x20x20 also a ...
3
votes
2answers
877 views

Can PETG be used as support material for PLA?

Printing supports, either complete, or partially from PVA have not always resulted in successful prints according to my experience with the filament (used in a dual extruder Ultimaker 3 extended). But,...
3
votes
4answers
2k 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 ...
3
votes
3answers
2k views

Can you use PLA material with food and drinks?

I would like to print fancy plastic cutlery sets or plastic glasses. Is it safe to do it? Or bad for your health, if so, why?
2
votes
1answer
282 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 ...
1
vote
0answers
112 views

Why does printing outer walls last cause corner curling?

In an old question I just self-answered, I had ongoing problems with corner curling that went away due to my switching to using Cura's Outer Before Inner Walls (...
0
votes
2answers
116 views

How to find pure PLA filament?

Prompted by discussion in comments of a recent question whether PLA is suitable for parts that need to be in contact with acetone, I did some casual experiments and found that my clear/"natural&...