Replacing the sun-rotted hose for Mary’s garden called for a new grip, because of course all hose fittings are different:
The ridges on the fitting looked close enough to half-cylinders and the fitting wasn’t tapered enough to worry about:
The OD came from the original grip, because it neatly fits Mary’s hand, and the nubbles are round-end cylinders.
Got it done the day after the old hose split, glued it on the hose with E6000+, installed it the next morning, whereupon the weather delivered three inches of rain. It’ll get screwed onto the faucet in a few days …
The OpenSCAD source code as a GitHub Gist:
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| // Hose fitting grip – simple plastic extrusion | |
| // Ed Nisley – KE4ZNU | |
| // 2025-07-30 | |
| include <BOSL2/std.scad> | |
| /* [Hidden] */ | |
| HoleWindage = 0.2; | |
| Protrusion = 0.1; | |
| NumSides = 3*2*4; | |
| $fn=NumSides; | |
| ID = 0; | |
| OD = 1; | |
| LENGTH = 2; | |
| NumRibs = 8; | |
| RibOD = 3.0; | |
| GripOA = [32.5,66.0,16.0]; | |
| KnobBallOD = 6.0; | |
| union() { | |
| difference() { | |
| tube(GripOA[LENGTH],id=GripOA[ID],od=GripOA[OD],orounding=2.0,anchor=BOTTOM); | |
| for (a = [0:NumRibs–1]) | |
| rotate(a*360/NumRibs) | |
| right(GripOA[ID]/2) down(Protrusion) | |
| cyl(GripOA[LENGTH] + 2*Protrusion,d=RibOD,anchor=BOTTOM); | |
| } | |
| for (a = [0:NumSides–1]) | |
| rotate(a*360/NumSides) | |
| right(GripOA[OD]/2) | |
| up(GripOA[LENGTH]/2) | |
| cyl(GripOA[LENGTH]/2,d=KnobBallOD,rounding=KnobBallOD/2); | |
| } |
The Smell of Molten Projects in the Morning 
Comments
2 responses to “Hose Fitting Grip Redux”
Nice. Pretty close to the design I whipped out in OpenSCAD
https://www.thingiverse.com/thing:6710730
I’m pretty sure that’s what convinced me the little ridges around my original grip were entirely too cute. :grin: