this post was submitted on 12 Mar 2024
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I watched a 3D printing youtuber say that Adam Savage said 20% but 10% is what he uses.

I have never seen my sunlu dryer show anything bellow 23% even after days of use and I have no idea how to achieve 10 without cooking the filament.

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[–] ShadowRam@fedia.io 1 points 8 months ago* (last edited 8 months ago) (7 children)

Yeah.. I've been printing now for 11 years..

I've submerged PLA in water overnight and then printed it to prove humidity has no effect on PLA.

PLA doesn't give a shit about humidity and never has. All the early days of 3D Printing that used Nylon needed drying out.

Even early days PLA getting brittle was about strain fatigue on the filament and nothing to do with humidity. But modern day PLA these days doesn't suffer from those old school issues anymore.

Dust will cause more issues than humidity.

[–] rikudou@lemmings.world 3 points 8 months ago (5 children)

I've had issues with wet PLA filament that were solved immediately by drying it.

[–] ShadowRam@fedia.io 1 points 8 months ago (2 children)

What issues? Brittleness?

You solved that via annealing and releasing the stress in the PLA, not by drying it.

[–] DreadPotato@sopuli.xyz 1 points 8 months ago* (last edited 8 months ago)

I've had bad stringing before with PLA, drying it made it go away completely with the exact same print settings and model.

I'd argue that the vast amount of (recent, not only older) resources available online showing similar experiences to mine disproves your statement that PLA has no issues with moisture retention.

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