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Polydryer Humidity: February

After two months of sitting around:

2026-03-072026-03-08
Filament%RHWeight – gWt gain – gGain %%RH
PETG White1453.23.26.4%10
PETG Black1452.32.34.6%14
PETG Orange2452.12.14.2%32
PETG Natural1852.62.65.2%14
PETG-CF Blue1852.82.85.6%14
PETG-CF Gray1853.53.57.0%14
PETG-CF Black1453.23.26.4%10
PETG Blue1052.52.55.0%10
TPU Clear1852.72.75.4%10
TPU Black1453.63.67.2%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.

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