What's the most rigid filament?

Opis

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PPS-CF and PPA-CF have seen a lot of hype - but is their boost in part stiffness worth the 10x price increase over simple PLA?

Filaments shown - ordered by amount used
Prusament https://go.toms3d.org/Prusament
Bambu Lab https://go.toms3d.org/bambufibers
Proto-Pasta (HTPLA) https://go.toms3d.org/ProtoTom/
DAS FILAMENT https://dasfilament.de
Colorfabb https://go.toms3d.org/colorfabbXT
Peopoly https://peopoly.net/collections/peopoly-lancer-filaments
Sunlu https://go.toms3d.org/Sunlu
VoxelPLA https://voxelpla.com/madewithlayers

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