magnetic_label
thingiverse
This label is magnetic and I designed it for the lab where I worked. About magnets, here you are the right size: https://www.amazon.fr/puissant-supportant-Power-Magnet-Store/dp/B00P4CGIU0/ref=sr_1_24?ie=UTF8&qid=1515150347&sr=8-24&keywords=magnet+expert I know, the power is excessive but in the laboratory nobody used these.
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