Filament Drying
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How to Store Filament Long Term: RH Targets by Material
Dry spools first, then seal them with silica gel and a hygrometer: under 30% RH for PLA, under 20% for PETG, TPU, PC and PVA, kept cool and dark.
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Wet Filament Symptoms and How to Fix Them: PLA, PETG and TPU
Wet PLA, PETG or TPU pops, strings and prints pitted walls. Prusa's drying temperatures by material, plus a repeat-print test to confirm the fix.
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How to Dry Filament: Drying Chart by Material
Use a filament drying chart with temperatures, hours and recipe limits by material, then choose a drying method and keep the recovered spool dry.
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Filament Density: Convert Spool Weight to Length
How filament density converts spool weight into printable length, why net spool weight matters, and how absorbed moisture ruins otherwise good material.