Radiator bleed key / adjustment key holder
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A holder for that bleed /adjustment key that we all misplace. Easy to adapt, fast print, FreeCAD source provided :-)
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Model information
- Source
- Printables
- Category
- Other House Equipment
- License
- Creative Commons — Attribution — Share Alike
Holder for Radiator Bleed Key / Adjustment Key
A simple clip for that little bleed or adjustment key from the heating system that we all seem to misplace 😜
The clip provides a place for the key and simply clips onto a piece of pipe:

Customization
The STL provided here is for a attaching a 9-mm key to a 16-mm pipe (floor heating, see photo above). You can easily adapt this to other diameters by modifying the FreeCAD source file.
There are only 2 parameters you need to adjust, everything else is calculated automagically:
IDclip(the inner diameter of the "clamp")ODkey(the outer diameter of the tubular part of the key)
You could also modify the wall thickness, Thick - this is set to 2 mm.
Printing
I printed mine from some white PLA with 0.3 mm layer height and merely 5% infill.