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24 votes
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Which is more durable to sunlight/weather - PLA, ABS or PETG

Ok, I tried all 3 materials. PLA failed after less then one day, I believe it deformed from the constant pressure and fell out (I didn't find the part but I didn't really search for it, there's some ...
Nir's user avatar
  • 2,541
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
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

Which is more durable to sunlight/weather - PLA, ABS or PETG

PLA would be a non-starter for outdoor use as it's biodegradable and can breakdown in sunlight. Albeit slowly, but won't be useful for long term project. ABS would be a good choice for longevity, as ...
Diesel's user avatar
  • 1,905
11 votes
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Reducing amount of material

Updated to match the improved question format. There are a few ways to reduce material usage. First is what you have touched on. Which is to reduce the design by punching out holes, and removing all ...
StarWind0's user avatar
  • 3,113
9 votes

Which is more durable to sunlight/weather - PLA, ABS or PETG

I might be late to the party, but I have a suggestion. Why not use ASA filament, it's the kind of plastic used in car cup holders, lawn rakes and sprinkler heads, it is both heat and cold resistant, ...
James Hanvey's user avatar
8 votes
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Are 3D prints safe to touch right after printing?

FFF/FDM: Yes FDM/FFF runs by melting a filament and letting it cool again. As soon as the printed parts are cooled down to below 50°C (which is rather quick) handling them is safe. There's no chemical ...
Trish's user avatar
  • 22.1k
7 votes

Advantages of PETG filament?

PETG is great, but definitely not as easy to print as PLA. However the advantages of higher impact resistance, temperature resistance and longevity make it superior to PLA for parts that require those ...
hilo90mhz's user avatar
  • 111
7 votes

Is PLA filament conductive?

PLA is non-conductive at room temperature, but when you heat it up over 70 C it is no longer as great an electrical insulator as the part will begin to fail. These temperatures could occur in ...
Dave Pena's user avatar
7 votes

Should I be worried about the lead in brass nozzles?

No. Leaded brass is around 2 % lead and the wear is negligible. How much has your nozzle worn? If your nozzle has worn from 0.4 mm to 0.5 mm over that year, there's maybe $$ ((.5 mm/2)^2-(0.4 mm/2)^2)...
Dave X's user avatar
  • 171
6 votes
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Are there any metals that exhibit a large glass state?

A few things are required for effective extrusion-style 3d printing materials: It must stay where placed by the nozzle long enough to harden (or, alternately for pastes and such, have a shear-...
Ryan Carlyle's user avatar
  • 6,606
6 votes

3D printing a boat hull

You will really need to specify your constraints better because the short answer is yes, what you describe is entirely possible, but without knowing whether you are limited to a particular budget, ...
Hari's user avatar
  • 183
5 votes

Would 3d-printed objects outgas in vacuum?

This naturally depends on the ultimate pressure you require. I have made a few tests with LEGO pieces (ABS) in vacuum and reached 10-5 mbar without problems. I did not try to go any lower. Otherwise, ...
Kyamon's user avatar
  • 51
5 votes

Reducing amount of material

"Just like the movies"-type tech typically means $$$. For those who do not own (legally or otherwise) expensive CAD software, it may be difficult to find an out-of-the-box solution. That's not to ...
tbm0115's user avatar
  • 6,324
5 votes
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3D printing a cardboard box

The closest thing you will find is Woodfill plastic. As time goes on we are seeing more and more PLA that is infused with other materials. Woodfill will look and feel like waxy wood. We are pretty ...
StarWind0's user avatar
  • 3,113
5 votes

How to print TPU material with 3D printer

Elastomers do much better on direct-drive heads (pulled to the head by the motor) than on Bowden designs (where the material is pushed to the head by a motor). This is because the flexible TPU or TPE ...
Davo's user avatar
  • 2,440
5 votes
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What filaments allow air to pass but not water vapor?

It is difficult enough to make 3D-printed objects water-tight (unless you paint them). Making them permeable to air but not water vapour is too big an ask, I think.
Mick's user avatar
  • 3,180
4 votes

Are there any metals that exhibit a large glass state?

I spent some time looking at making an FDM machine that would print bronze filament. An alloy commonly made into wire had a difference between the solidus and liquidus temperature of only 50 degrees ...
cmm's user avatar
  • 4,551
4 votes

Which are the food-safe materials and how do I recognize them?

I have looked at this a lot, both from the standpoint of my own use, and of selling items on Etsy. As far as I can determine, PLA and ABS are both generally safe. The FDA lists ABS and PLA as safe ...
cmm's user avatar
  • 4,551
4 votes

Bonding PETG to glass

The solvents that can dissolve PET are pretty nasty -- I wouldn't personally handle any of them outside a lab fume hood. If you have that, a 50/50 mix of MEK and methylene chloride should work. (...
Ryan Carlyle's user avatar
  • 6,606
4 votes

How to reuse modelling bases for the Stratasys uPrint SE Plus?

What I tried and worked is to apply water based normal Glue-stick on the tray and with few drops of water distribute it evenly across the tray surface, let it dry and then you are good to go!
Mohammad Sallam's user avatar
4 votes

3D printing enclosure with LED indication symbols -- is this possible?

Achieving this with 3D printing would be quite difficult, and you might be better served by creating this effect some other way (I would personally recommend getting some inkjet transparencies and ...
Tom van der Zanden's user avatar
4 votes

Affordable 3D printing of reflector

I would not recommend extrusion printers for this, because they are unlikely to produce a smooth enough surface. To get a clean surface, the irregularities have to be a fraction of visible ...
Carl Witthoft's user avatar
4 votes

stable FDM materials

Tough set of requirements and definately pushing into the professional domain. I would recommend checking out ULTEM 1010 Resin which is similar to PEEK but has a higher glass transition temp of 215&...
Chris Thompson's user avatar
4 votes

Is PLA filament conductive?

It's non-conductive, but I would check to make sure with any colored filament. Black may have iron oxide or carbon black which may give it minor conductance.
Richard Smith's user avatar
4 votes

3D printing a boat hull

Something similar has been done in ABS already, although I don't expect it gets left in the water for years. See the video, showing a kayak being printed in many ABS sections of about one cubic foot, ...
Davo's user avatar
  • 2,440
4 votes

Can 3D printers print details in the 1/10 of the micrometer for metals?

You can get the 0.1 micron (100 nm) resolution with a 2-photon 3D printer, but only in a polymer resin. Nanoscribe, in Germany, pioneered this technology, see Mechanical Microstructures. Their ...
Vince 49's user avatar
  • 180
4 votes

Filament material for chemical application

There are two issues you have here, one is temperature stability and the other is chemical reactivity of plastics. I can't help you with the chemistry side, but I can help with the temperature. ...
Diesel's user avatar
  • 1,905
4 votes

Can PLA be reshaped after printing if it is heated?

Yes, printing a flat strand structure and then shaping it using heat to form hair is something people already do, for example with the Hairy Lion model.
Tom van der Zanden's user avatar
4 votes
Accepted

How much weaker does PETG become when it absorbs as much moisture as it can hold?

To my knowledge, there is no reason to expect a printed PETG object to become weaker by virtue of absorbing moisture. Unless you keep it in a controlled environment with desiccant or unless it's solid ...
R.. GitHub STOP HELPING ICE's user avatar

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