Ikea Klippbok Water Leak Sensor Wall Mount

I had a water leak under my sink and my IKEA Klippbok water leak sensor (matter over thread connected to Google Home) warned me immediately such that I could take action. However, I immediately noticed two issues with this sensor: (1) when properly wet there is not a fast way to shut the audible alarm and (2) when opening the battery component to shut the thing up, water got in there as well. Fortunatly the device was still functional after a quick wipe and drying it out. However, I wanted to improve the experience and longevity of my sensors.

Ideally I wanted to hang these sensors on the inside side panels of the my sink cupboard, my aquariums and my washingmachine area such that: (1) the device and battery remain dry when a leak is present and (2) a way to shut them up when acting to fix the leak that has been detected.

Fortunately, I found the design by Kongolasse (see referenced "remixed from"). Printed that design on my Prusa Mini with PETG and a 0.8mm nozzle. That print failed. Not necessarily due to poor design, but more likely because of the 0.8 mm nozzle was too thick for some of the thinner wall parts in that design. Personally I have trouble with support material when using PETG, while PLA prints typically go fine. Why swap out the nozzle when you can design something your self? 

This design utilizes the wire extension idea shown by Kongolasse in an otherwise remade holder part, specifically made to print without needing supports and suitable to use a 0.8 mm nozzle (with 0.9mm line width). Otherwise the design serves the same goal and functionality.

Key design parameters:

• Made to fit the Ikea Klippbok water leak sensor, oriented with the loudspeaker (on the front) and the leak sensor contacts (on the back) on the bottom side of the holder.

• Made to be printed with all common nozzle diameters trhough designing it for a 0.8mm nozzle with 2 perimeter walls. Hence all smaller nozzles will have at least 2 perimeter walls and infill in between.

• Has two holes designed for wall mounting screws with an internal diameter of 4mm, with the holes spaced 25mm apart (centreline to centreline)

• Has two sets of holes for the extension of the water leak sensor electrical contacts (or water "feelers"). These holes have a minimum width of 2.4 mm.

• When a water leak is detected through the extender wire, one can simply lift the sensor out of the wall holder to stop the alarm from going off.

Print instructions:

• Print oriented as shown in the photo's.

• Printed mine in Prusament PLA Blend Royal Blue with 0.8 mm nozzle and 0.3 mm layer height.

• Set seams aligned to the rear.

• No supports necessary.

Wire extension advice:

• I used standard European copper 2-wire 0.75mm2 electrical cable.

• Stripped the ends and looped them through the holes and back around itself at the back of the holder.

• Depending on the length/weight of the cable I may mildly solder the joint at the back, but it seams pretty strong so far.

• On the floor of the area where the water leak should be detected is simply stripped the two adjacent wires for 1cm every 10cm or so, and ensured that the wire lies flat on the flow (not shown in the pictures). Other solutions are available online.

Happy printing!