Those with the purple badges should test the heat reactive nature :-) nostr:note1acg0el78jewpnjz46g4xyln4jflh0ruxzcgvlprhc4zxuljqjzkq3d2ssj
what kind of material is this?
pla with additives?
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Yeah, it’s PLA, not sure the exact details of the colour changing dye.
have you thought about a qr code on the badge?
