VERIFIED DRYING DATA
Drying data should belong to a product, not a rumor.
FilamentFix separates generic material guidance from exact-product manufacturer instructions. When manufacturers—or even two official pages from the same manufacturer—publish different values, we show the difference instead of averaging it away.
Drying ≠ storage
A heated dryer is intended to remove absorbed moisture. A sealed dry box with desiccant is mainly about limiting new moisture exposure. If a spool is already wet, storage alone may not reverse the problem.
Verified drying database — expanded starter set
These values are shown exactly in the scope published by the manufacturer. They are not universal settings for every spool with the same polymer name.
| Manufacturer / product scope | Material | Drying | Storage / humidity | Status |
|---|---|---|---|---|
| Bambu Lab PETG HF | PETG | 65 °C · 8 h in blast drying oven | <20% RH while printing/keeping, sealed with desiccant | Verified |
| Polymaker PETG | PETG | 60 °C · 6 h if material absorbed moisture | Keep sealed and dry when not in use | Verified |
| Prusament PETG — all versions in Prusa table | PETG | 55 °C · 6 h | Closed storage with desiccant recommended generally | Verified |
| Prusament PLA / rPLA | PLA | 45 °C · 6 h | Closed storage with desiccant recommended generally | Verified |
| Prusament TPU 95A | TPU | 60 °C · at least 4 h when moisture is absorbed | Drybox recommended after drying | Verified |
| Bambu Lab PA6-CF | PA6-CF | 80 °C · 8–12 h before printing | <20% RH while printing/keeping, sealed with desiccant | Verified |
| Prusament PA11 Carbon Fiber | PA11-CF | 90 °C · 6 h in Prusa drying table | Dry-box storage strongly recommended | Verified |
Checked September 14, 2026. Sources: Bambu Lab PETG HF · Polymaker PETG · Prusa Drying Filament · Prusament TPU 95A · Bambu PA6-CF.
Conflict watch: Polymaker PolyFlex TPU90
Polymaker’s current TPU90 product page shows 50 °C for 6 h in its technical-spec area, while the current Polymaker Wiki/TDS page shows 70 °C for 8 h. FilamentFix marks this as a manufacturer-source conflict instead of choosing or averaging the values. Check the newest product documentation for your spool or ask Polymaker before using the higher-temperature instruction.
Why different numbers can all be correct
Bambu PETG HF, Polymaker PETG, Prusament PETG, Prusament TPU, Bambu PA6-CF and Prusament PA11 are different products and formulations. Their manufacturers publish different drying instructions. FilamentFix treats those differences as useful product data—not an error to hide behind a generic material rule.
When should you dry?
- When the exact manufacturer instructs pre-drying.
- When several moisture clues line up: popping, bubbles/rough extrusion, exposure history and gradual degradation.
- When a highly hygroscopic material has not been kept dry.
- Not simply because one print has stringing.
Drying guides
How to Dry Nylon Filament Safely
Nylon and PA-based filaments are highly moisture-sensitive, but drying settings differ by product. Compare current Bambu PA6-CF and Prusa PA11 references before…
How to Dry TPU Filament Safely
Dry TPU using exact-product guidance, not one universal temperature. Compare current Prusa and Polymaker instructions and learn how to test whether drying…
Does New Filament Need to Be Dried Before Printing?
A sealed new spool is not automatically dry—and it is not automatically wet. Here’s how to decide whether drying is worth doing.
Filament Dryer vs Dry Box: Which One Do You Actually Need?
A filament dryer and a dry box solve different problems. Learn when you need active drying, protected storage, or both.
How to Dry PLA Filament Safely
How to decide whether PLA needs drying and how to dry it using product-specific guidance rather than unsafe universal settings.
How to Dry PETG Filament Safely
A safe, manufacturer-first workflow for drying PETG without pretending one temperature and duration fits every product.
Filament Dryer vs Food Dehydrator: Which One Makes More Sense?
Compare a dedicated filament dryer with a food dehydrator by temperature range, spool fit, printing convenience and material compatibility.
Filament Dryer vs Oven: Which Is Safer and More Useful?
Compare a dedicated filament dryer with a household oven by temperature control, drying range, monitoring, convenience and risk of damaging the spool.
Can You Over-Dry 3D Printer Filament? Heat, Time and Spool Risks
Drying is not a hotter-is-better process. Learn why excessive heat, excessive time and spool limits matter—and what official guidance says.
Need the exact product instead of a generic material?
Open the Filament Library for manufacturer-linked drying, storage and print-profile data with visible verification status.