Shower Hose Passthrough (for handheld shower head/bidet)

This grommet allows passing a shower hose through a sink cabinet or similar.

The helix variant is designed to fit the handheld bidet set that is widely available for purchase online. Specifically, the SUS304 stainless steel variant.

The helix fits into the spiral groove of the shower hose to hold it in place and prevent it from sliding through. Please note that the included shower hose might vary. If it does not work for you, either try the "no helix" variant or use FreeCAD to adapt the helix parameters in the Params.

If you like this design, please consider leaving a ♥heart. Thanks!

----------

Hose

• Hose diameter: 14 mm

For the helix variant, measure the spiral on the hose:

• Helix width: < 3.7 mm

• Gap width: > 1 mm

• Gap depth: > 0.4 mm

Cabinet

• Wall thickness: >= 15 mm

If that doesn't work for you, you can use FreeCAD to change the parameters in the Params object.

----------

Materials/Tools

• Zip tie

• 19 mm Hex wrench (open)

• 25 mm Hole saw

----------

Installation

• Cut a hole in wall of the sink cabinet. For hole diameter see above.

• Pass the hose through the hole.

• Fit both parts of the outer element around the hose on the inside of the cabinet. (Outer refers to the thread, not the cabinet!)

  • Use a zip tie around the hexagonal part of the outer element to hold it temporarily together.

• Fit both parts of the inner element around the hose on the outside of the cabinet.

  • Make sure to place it on the hose so that you have enough of the hose inside the cabinet after screwing it into place. You want to be able to connect the hose and have it hanging slightly loosely.

  • The halves should fit snug onto the hose and still fit together easily.

  • If you use the helix variant, the helix must match that of the hose. If it does not, you might want to use the "no helix" variant.

• You should now be able to screw the outer element (that is inside the cabinet and has a zip tie on the hex segment) onto the inner element (that you hold together on the outside of the cabinet).

  • Screw it by hand until it holds together, then remove the zip tie and use a wrench to complete the process.

  • If you did not use the helix variant, tighten the zip tie on the hose right behind the passthrough to prevent it from slipping through.

Sorry for the confusing part naming scheme.

----------

Printing

• Filament material: PLA(+)/PETG

• Resolution: 0.20 mm

• Infill: 60 % Grid

• Perimeters: 4

• Supports: Yes, around the hexagonal segment (style: snug)