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Polydryer Humidity: February
After two months of sitting around:
2026-03-07 2026-03-08 Filament %RH Weight – g Wt gain – g Gain % %RH PETG White 14 53.2 3.2 6.4% 10 PETG Black 14 52.3 2.3 4.6% 14 PETG Orange 24 52.1 2.1 4.2% 32 PETG Natural 18 52.6 2.6 5.2% 14 PETG-CF Blue 18 52.8 2.8 5.6% 14 PETG-CF Gray 18 53.5 3.5 7.0% 14 PETG-CF Black 14 53.2 3.2 6.4% 10 PETG Blue 10 52.5 2.5 5.0% 10 TPU Clear 18 52.7 2.7 5.4% 10 TPU Black 14 53.6 3.6 7.2% 10 The last three boxes had 50 g of activated alumina and got fresh doses from the same bottle.
The other boxes had 50 g from the original bottle of silica gel beads and now have regenerated (and likely damaged) silica gel beads.
AFAICT, the meter in the orange PETG PolyDryer box isn’t working right, because the humidity indicator card in there has blue spots all the way down to 10%, just like the other boxes. Color differences for meter readings in the teens may be too subtle for my eyes.
Next time around, they’ll all get alumina beads.