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Comment from someone pessimistic because of experience: https://news.ycombinator.com/item?id=13764689 https://news.ycombinator.com/item?id=13764689 Last month

• fencepost 10y ago
  Interesting, sounds like the combination of durable, compact and enough motion for raising pins just isn't there. That's a bit surprising, but I suppose most industrial applications where you need to raise/lower a pin repeatedly for millions of cycles don't also have the same kind of space constraints or have other options like air jets. Thanks for catching that and pointing me to it.