Ceiling is not uniformity
Reaching a displayed maximum does not prove that a loaded spool is heated evenly throughout the chamber.
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Dryer capability reference
SUNLU FilaDryer E2
Engineering-material dryer and annealing chamber with a documented 35–110°C range, 0–99 hour timer, and capacity for two regular 1 kg or 2 kg spools or one 3 kg spool.
2 spoolsfeed-through documented
Temperature-ceiling screen
Family references this model can reach on paper
The spool also has a limit
Do not expose a spool to more heat than its maker permits. Respooling may be required for higher-temperature drying.
Exact product data wins
Formulation-specific instructions override this family-level screen. Confirm the exact model and current regional product specification.