• Re: Pneumatic fittings

    From Andy Burns@usenet@andyburns.uk to uk.d-i-y on Wed Feb 18 11:04:34 2026
    From Newsgroup: uk.d-i-y

    Theo wrote:

    Andy Burns wrote:
    I'm building some 3D filament storage boxes

    I can recommend this one, as they use the same boxes and have a container
    for dessicant:

    https://www.printables.com/model/1249376-the-ultimate-cereal-container-filament-drybox

    I noticed that version first, but decided on the other one as it seemed
    to use less filament (for stacking and the polydryer adapter plate) also
    I'm not bothering with the printed labels and holder. I have desiccant
    in my containers.

    I ended up not buying the Polydryer and just using the 3D printer bed for drying - 8 hours under a cardboard box at 70-80C works very well. I put a
    $1 mini hygrometer on top and watch the temperature with the 3D printer camera - you can see the act of drying as the moisture level stays stable as the water comes out and then drops.

    I've got a spool of PETG on the go, but it's starting to print with
    little bubbles/pinholes every few cm, so I put it on the dryer for a
    couple of hours, the RH in my house is about 45-48% at the moment, the
    RH in the container went down to 10% and has stayed there for 2 days.

    These use "PC4-M10" pneumatic fittings
    Anyone work with them in their real pneumatic usage and know the actual
    thread?

    They supposedly come in both M10 x 1.0mm thread and M10 x 0.9mm thread versions. Regular M10 nuts are M10 x 1.5mm thread which is why they won't fit.

    I had already taken the chance on a bag of M10x1.0 nuts, they arrived
    this morning and are correct, I would have preferred half-nuts but
    didn't find any to order.

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