#Is PLA stronger when printed hot? I tested it!

1 messages · Page 1 of 1 (latest)

daring sapphire
tight cypress
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"Some like it hot" lol

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Super cool

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Kinda what we expected, hotter = better layer adhesion

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Impact resistance is interesting though. I wonder if printing it hotter allows it to.... cool in a more.... what's the word I'm looking for... crystalized state? So it's more brittle?

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I wonder if tempering would help and would produce ANY difference between the printed temperatures. Tempering/ whatever it's called for filament

daring sapphire
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Oh annealing maybe or?

graceful cipher
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Interesting about the 185C result for XY. Not surprising on the High temp results

rancid lanternBOT
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Research Article: Investigating the effect of fabrication temperature on mechanical properties of fused deposition modeling parts using X-ray computed tomography

Premise
Experimental investigation on effects of fabrication temperature on mechanical properties of FDM parts is presented. Specimens fabricated at temperatures ranging from 180 to 260 ∘C were used for this investigation.

TLDR:
PLA has been shown to benefit from printing at elevated temperatures, even as high as 260C. Some of these benefits include higher density, lower internal porosity and improved interlayer adhesion. These benefits amount to a stronger part.

Caution:
Take care before exceeding 225C to ensure your machine and hotend are up to the task. Stock machines usually are not safe above these temperatures due to a ptfe lining see ?ptfe-temps for more info.

?platemps requested by: chase.d#0
tight cypress
graceful cipher
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if you haven't read the article linked in blue, I would highly recommend it

tight cypress
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Ooo I'm going to check it out

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I would honestly throw out the 185 result for XY, it didn't fail in the same manner so the result should not be shown with those that did

daring sapphire
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Yeah the 185c parts are like wood fibers, just hard to break or tear apart

tight cypress
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Or put a big ol' "*" next to it

graceful cipher
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Nice to see we aren't getting any notable degradation of the polymer in the results

daring sapphire
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Yeah I think we would see that at higher temps

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Is it uhh... safe to do 300?

tight cypress
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Is that the thermal degradation temp of pla?

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Relevent article

graceful cipher
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You are getting close to auto ignition as well so there's a bit of a hazard in that regard as well

daring sapphire
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Oh 😂

graceful cipher
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oh well not very nvm... 388C

daring sapphire
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Ah thats ok

graceful cipher
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but you'll want ventilation

daring sapphire
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I will do it for science, just use ventilation and be in another room

tight cypress
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News headline: "Local 3d printing nerd passes out trying to get filament to auto ignite"

daring sapphire
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Man, I wish my nozzle could get to 388! bulbasmile

tight cypress
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lol anyway, awesome results man, I love it. Looks great. It's nice to see real results you know?

daring sapphire
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Yeah theres always a moment of suspense when I compile the numbers and see if theres a correlation. This one is probably the cleanest I've gotten, aside from that stupid 245

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but my jaw hit the floor when i dropped the hammer on the 185 and it just cold stopped it while exploding like one of those plants

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@civic summit
@latent tinsel
@kind estuary

civic summit
daring sapphire
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Yeah I used 240 but I might just stick with 230 as there is a difference in print quality and the strength gain is marginal unless you're printing exclusively for strength

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In which case 260 is noticeably better