ffp2 mask on ski helmet holder - or parameterizable hook
thingiverse
Currently you have to wear a FFP2 mask while using skiing lifts in Austria. These little hooks allow you to attach and remove the mask while wearing your helmet. You might need to add a knot on both sides to keep the mask tight, this will also make it easier to remove the mask again. But of couse this hook could be used for pretty much everything that needs such a hook. Fully parameterizable in OpenSCAD. Sources are also here https://github.com/bzed/openscad-parts/tree/main/ski-helmet-holder pull requests are welcome.
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