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  • I 3D printed myself a box cutter. I was always fumbling for my penknife when opening packages and thought it'd be a fun/geeky way to have something easily to hand for opening boxes.

    However, it just occurred to me that it may be illegal? Its not spring loaded, but you can open one hand with a flick of the wrist. It doesn't lock exactly, but has rare earth magnets that hold it open. The blade doesn't fold, but it has a mechanism that increases/reduces its length.

    I'm not worried about owning it for opening parcels in my own home, but I'm interested to understand whether I have crossed a line into a grey areas. Anybody have any thoughts?


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