Don't print the braille document directly. Instead, I suggest printing a braille embosser. Think Gutenberg press. Then use that to press braille lettering onto a sheet of paper.

Although if you just want one sheet, I guess you could use the print directly, but maybe don't use PLA since it'd be kinda sharp and unpleasant to run your finger over.

I've also been idly contemplating 3D printing braille. Somewhat annoying that that's the cheap+easy option, but if it works...

:)