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https://1024.ee/index.php/2020/09/04/%e5%9c%a8kickstarter%e6%90%9e%e4%ba%86%e4%b8%aa%e8%bf%99%e4%b9%88%e4%b8%80%e4%b8%aaengraver/
在kickstarter搞了个这么一个engraver