PETG vs PLA - What is stronger?

PETG vs PLA - What is stronger?

In this video, I am doing a strength comparison of PETG vs PLA to see how flexible both materials are and when they break. They have to perform 4 tests:

- Breaking at room temperature
- Boiling water and deformation test
- Freezing in the fridge
- Baking in the oven

By far this is not a scientific test but it still shows the major differences between both materials. Have fun watching!

Material: AmazonBasics PETG, see links below
Print settings: Temp 230-235° Nozzle, 75-80° Bed, Retract 2mm, Speed 60mm/s, Infill 100%

*** Get the Anet A8 here
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Gearbest:

*** Material used

AmazonBasics PETG

AmazonBasics PETG Multipak (5 different colors)

*** CURA Profiles

AmazonBasics 1.75mm PETG at 2mm layer height

*** Thingiverse parts

Filament strength test

*** Tools used in this video

RISEPRO Hanging Scale

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GEAR USED

Disclaimer: As an Amazon Associate I earn from qualifying purchases.

[CrosslinkD]

Please check out the Description for print settings and material used

[ontime]

I printed with Sunlu PETG and what I niticed was the PETG is really fragilar… It snaps and breaks, not stretching at all. Start thinking that I got some bad batch or bad PETG…

[otmaneghazal]

I want to make a keychain to attach to my car keys, what material do you recommend me to use? Thank to anyone who answers.

[mikesavad]

i know this is a few years old. but you should rig up a pulley so you aren't hit in the head each time.

[Trumplican]

just curious what is your accent? It's very cool!

[wullie]

What about spinning? At what point would both filament shatter?

[TheJustonemore]

just put a A8 together what should i do first second third?

[SimiTravels]

petg just bend... but why u didn't show as u did for pla the pressure u were applying? that's tricky

[sampitz]

Hi. What temp point does pta soften? Petg is more heat resistant? Tnx

[kristoferkrus]

The fact that the PLA held 3 kg (about 10%) more after being baked may be explained by the fact that it got 10% higher. The stress the PLA was able to handle was not any higher after being baked than before, but since the PLA bar was higher, this effectively created a 10% longer lever, so the bar was able to withstand 10% higher torques.

[ShikaiXu]

For the last baking test, I think the increment of strength of PLA is not because of being heated, but the thickness is increased and that leads to it's pulling strength increased.

[neveridle]

No sheet of the results? At least a table or a graphic would be very helpful for a quick comparison.

[shishanyu]

I don’t know how anyone would take this methodology and results seriously

[oswiga]

You should have immersed the parts in boiling water for a set duration of time in order to get a more accurate break / flex test results

[tomgirl]

What about nylon vs petg. Which is stronger n flexible

[cwill]

To find this, all you have to do is take (Moment about face of failure) * (distance from the neutral axis) / (second moment of area)
You can use this to design your geometry with a specific factor of safety in mind for each material!

[Person]

Thanks, I wanted to confirm if PETG failed in a safe manner, and not shatter. I'm looking forward to printing slingshots.

[BlackWings]

Kudos for repeating your tests and averaging results for more statistical accuracy.

[BenjaminRayner]

These are great tests thanks for sharing!
I’m interested in recycling PETG to a spool 🧵 and then output to 3d printer again.
I’m a noob & wondering if there is a discord or chat channel I can join? Do you also twich live stream any experiment 🧪?

[anuragpal]

which material should i use for it to be flexible as well as be able to hold 100 N force ? please reply ASAP