I'm not sure. You'd need the printer to be able to feed thicker paper, and I'd expect the resolution would need to be decreased, since poking holes as small as a Dot Matrix pixel doesn't seem like it would scale up to a Braille dot by just using several in a cluster.
Supposedly some tactile graphics are made via normal printers that just layer eink thickly enough to be felt. I think the Dot Matrix mod sounds more convincing.
I wonder if there's a type of paper which can simplify it? The problem with refreshable braille is finding ways to lock that many dots in each state, while cramming them into a tiny space. But if the paper doesn't need to be able to change states more than once, could it be designed in such a way as to cheapen the process?
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