The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

The New Hotness

  • Polydryer Humidity: October

    Another month of data from all those Polydryer boxes:

    7 Oct 20258 Oct
    Filament%RHWeight – gWt gain – g%RH
    PETG White2826.61.619
    PETG Black2526.61.620
    PETG Orange2926.61.621
    PETG Blue2326.71.715
    PETG-CF Blue2626.61.623
    PETG-CF Black2326.41.420
    PETG-CF Gray3026.51.526
    TPU2826.31.327
    Empty 1 → White3526.71.737
    Empty 23627.12.124

    The “PETG White” spool in the top line is nearly empty, so I loaded a new spool into the “Empty 1” box.

    The “Empty 1” 35% value on 7 Oct matches the other empty box, the desiccant having pulled the humidity down from the 51% basement level. The weight of the water pulled out seems low compared to “Empty 2”, as they both started with a fresh batch of basement air while changing the desiccant in September.

    They’re again filled with 25 g of alumina beads, although I’m beginning to think silica gel does a better job.

    A picture of the boxes, thus avoiding WordPress reminding me pictures improve SEO:

    PolyDryer PC4 Fitting - Prusa MMU3 setup
    PolyDryer PC4 Fitting – Prusa MMU3 setup