https://news.ycombinator.com/item?id=47441521 | Hacker News

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		bookofjoe 67 days ago \| parent \| context \| favorite \| on: How Invisalign became the biggest user of 3D print... https://news.ycombinator.com/item?id=47441521

gnabgib 67 days ago [–]

Yours was already a dupe, why comment? https://news.ycombinator.com/item?id=47411658

bookofjoe 66 days ago | [–]

Because I didn't realize it!

I SO wish HN would tell me things I submit are dupes BEFORE I submit them! In the past that happened, but something changed and now I never get those notices....

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