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Hoy — 10 Abril 2025Welcome to R/3D Printing! Come for the Benchy, stay for the Calibration!

Y'all ever wondered how old PLA prints degrade?

Y'all ever wondered how old PLA prints degrade?

Found a box of stuff I printed about 9 years ago out of PLA and it was crumbled/snapped as if it was made out of cornflakes. These prints were kept in cardboard boxes in roughly a average of 60% humidity around 30C° for their entire lifetime. Interestingly I have some other PLA prints from the same time period that have appeared to have retained their mechanical properties being just as elastic as I remember. The yellow PLA is as far as I can tell an old glow and the dark PLA blend and the black I believe is a Kexcelled PLA. All printed on a Prusa MK2.

I also discovered a box of old spools of all this material at the same time and am super curious to see if it still prints!

submitted by /u/esotericapybara
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First iteration of headphone mount I designed

First iteration of headphone mount I designed

The right arm has an elastic band to tension the platform and other arm. Problem is that because of the tolerances, the platform doesn't transfer the force properly to the other arm and instead learns slightly. Generated the gears and I drew up the rack myself, so the gears probably don't mesh perfectly with it.
For a v2, my best solution to this is to put tension on the platform instead, but open to ideas. The astute of you may also realize that the only thing stopping the platform from shooting out of the main body is friction, but that should be easy to fix.

submitted by /u/youarehowtobasic
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