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

  • Delta Shower Head Holder Extension

    The original shower head being too far overhead for Mary’s reach, I installed a Delta ProClean Shower Head which would also be too high. It has a hose, which means I can adjust the height:

    Delta shower head holder extension - installed
    Delta shower head holder extension – installed

    The InterWebs offer several 3D-printable versions of such a thing, but Delta offers many different shower heads, some of which are visually (to my eyes, anyway) indistinguishable from the 75740SN you see here. The model I tried did not fit the holder I have, so I conjured one from the vasty digital deep:

    Delta shower head holder extension - solid model
    Delta shower head holder extension – solid model

    It builds standing on that tidy cutoff:

    Delta shower head holder extension - PrusaSlicer warning
    Delta shower head holder extension – PrusaSlicer warning

    Despite PrusaSlicer’s kvetching about the “collapsing overhang” inside the socket, it came out fine.

    The shower head is still slightly too high for her, but now I can print another one with a longer offset and a slightly smaller plug to fit deeper in the OEM socket.

    Worst case, there’s a wall-mounted holder to put the shower head at shoulder height.

    The OpenSCAD source code as a GitHub Gist:

    // Delta shower head holder extension
    // Ed Nisley – KE4ZNU
    // 2025-05-02
    include <BOSL2/std.scad>
    Layout = "Show"; // [Show,Build,Plug,Socket,Connector]
    MountAngle = 30; // between OEM and new holder
    MountOffset = 20.0;
    /* [Hidden] */
    HoleWindage = 0.2;
    Protrusion = 0.1;
    NumSides = 3*3*4;
    ID = 0;
    OD = 1;
    LENGTH = 2;
    Insert = [21.0,24.5,35.0]; // hose connector taper
    PlugSize = Insert + [-0.3,-0.3,0]; // … for better fit in OEM holder
    Slot = [Insert[OD],14.6,3*Insert[LENGTH]]; // slot on OEM holder, arbitrary length
    WallThick = 8.0; // holder wall thickness
    Radius = 3.0; // shapely rounding
    $fn=NumSides;
    //———-
    // Define Shapes
    module Plug() {
    cyl(l=Insert[LENGTH],d1=PlugSize[ID],d2=PlugSize[OD],anchor=BOTTOM);
    }
    module Socket() {
    difference() {
    tube(l=Insert[LENGTH],id1=Insert[ID],id2=Insert[OD],wall=WallThick,anchor=BOTTOM);
    cuboid(Slot + [0,1.0,0],anchor=LEFT+CENTER);
    right(Insert[OD]/2)
    cube([Insert[OD],Insert[OD] + 2*WallThick,3*Insert[LENGTH]],anchor=LEFT+CENTER);
    }
    }
    module Connector() {
    difference() {
    left(MountOffset)
    cuboid([MountOffset + Insert[LENGTH]*sin(MountAngle),Slot.y,Insert[LENGTH]*cos(MountAngle)],
    anchor=LEFT+BOTTOM);
    yrot(MountAngle) right(Insert[ID]/2 + WallThick)
    cyl(l=Insert[LENGTH],d1=Insert[ID] + 2*WallThick,d2=Insert[OD] + 2*WallThick,anchor=BOTTOM);
    }
    }
    module Adapter() {
    union() {
    left(MountOffset)
    Plug();
    yrot(MountAngle) right((Insert[ID] + 2*WallThick)/2)
    Socket();
    Connector();
    }
    }
    //———-
    // Build things
    if (Layout == "Plug")
    Plug();
    if (Layout == "Socket")
    Socket();
    if (Layout == "Connector")
    Connector();
    if (Layout == "Show")
    Adapter();
    if (Layout == "Build")
    up(Insert[ID]/2 + 1*WallThick + Insert[OD]/2)
    yrot(90-MountAngle)
    Adapter();