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

  • Champion Hose Nozzle: Needs a Washer?

    An email discussion suggested the Champion hose nozzle might, once upon a time, have had a washer between the conical and cylindrical sections.

    So I made one:

    Champion hose nozzle - rubber washer
    Champion hose nozzle – rubber washer

    The details:

    • OD = ½ inch
    • ID = 9/32 inch
    • 2.5 mm stamp pad rubber

    It sealed perfectly, but, just before shutting off, the washer vibrated in the water flow and gave off an ear-shattering (even to my deflicted hearing) howl.

    Perhaps a stiffer and thinner washer with a slightly larger OD would work better.

    A quick check of similar nozzles in the Box o’ Hydraulics shows none of them feel like they have a compliant washer in there, but any sufficiently old rubber will have long since fossilized.

    This seems like a good job for a 3D printed washer with a conical face, made from slightly squishy TPU plastic to ease it past the nozzle’s internal threads. All I need is the ability to print TPU …