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    This is pretty neat .. of course its not a difficult stretch to imagine this scaling up in commercial viability and being incorporated into a ‘cheap printer’ style product that consist of a tray with incorporated quad-plotter that you can simply place on top of a stack of A4, and it plots the page instead of dot-printing it .. extra bonus being of course you can use any pen you want, and thus the refill industry dies a well-deserved death.

    I’d definitely switch to using a plotter for my printing needs if it meant I could use whatever pen I want.