Prusa Research
Every FilamentFeed story on Prusa Research — news, reviews, and analysis, newest first.
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Materials
TPU vs TPE vs TPC: Choosing the Right Flexible Filament for the Job
Flexible filaments are not interchangeable. TPU, TPE, and TPC differ substantially in hardness, chemical resistance, print temperature, and long-term fatigue behavior. Choosing the wrong one means a part that either fails in service or was never printable in the first place.
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Materials
Matte Filament: Why Dull Finishes Are Sometimes the Better Choice
Matte PLA and PETG reduce layer-line visibility, photograph better under broad lighting, and hide fingerprints. Here's how the finish is produced and where it makes sense.
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Materials
Best Filament Under $25: Value Picks That Don't Compromise on Quality
Budget filament has improved dramatically. These are the brands and specific spools worth buying at the low end of the market — and the ones that waste your time despite the low price.
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Materials
PCTG Filament: The Cleaner, Tougher Alternative to PETG Most People Haven't Tried
PCTG delivers better optical clarity, tougher impact resistance, and lower warping than standard PETG at similar print temperatures. Here's what it is, who makes it, and whether it's worth switching.
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Materials
ABS Filament Complete Guide: Why It Is Hard and When to Use It
ABS remains relevant in 2026 for its heat resistance, impact toughness, and acetone smoothability — but it demands an enclosure, specific bed adhesion, and careful settings. This guide covers everything.
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Materials
PVA and BVOH Water-Soluble Supports: The Complete FDM Guide
PVA and BVOH dissolve in water, enabling complex geometries impossible with breakaway supports. This guide covers how each material works, compatible hardware, storage requirements, and print settings.
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Materials
PETG Filament: The Complete Printing Guide
PETG sits between PLA and ABS in the filament hierarchy — combining good strength with easy printing. This guide covers print settings, moisture sensitivity, brand picks, and when PETG beats its rivals.
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Materials
The Best PLA Filament Brands Worth Buying
PLA is where most makers live, and the brand on the spool really does change your results. These are the PLA filaments we keep coming back to — for consistency, color, and the fewest failed prints.
