Submitted by WhyteBeard t3_125b6yx in explainlikeimfive
EvenSpoonier t1_je3ssik wrote
Reply to comment by traisjames in ELI5: Why can there be a double rainbow but never a triple rainbow? by WhyteBeard
It's an upgrade part for a 3d printer. Sorry about that; I'd been posting about that in another sub, and I pasted wrong. I'll fix the link.
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