Braille alphabet tiles

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These tiles help visually impaired individuals learn the alphabet in Braille. They were suggested by Lore Schindler, a teacher who helps people with visual impairments, in the 3D printed education models group: https://groups.google.com/forum/#!forum/3dp_edu_models. The tiles are created using OpenSCAD, and have features that you can adjust (for instance, to change the font size of the letters, or to make the tile larger or smaller). They utilize my Braille Openscad library, which is available on github: https://github.com/whosawhatsis/braille-openscad. It's not recommended to resize the STL, because specific dimensions are used for Braille, and it will be hard to read if it's not the right size.