I have always done Braille with my mechanical engraver until today.
Here is the method I used and it worked great. First, I used my Vision Pro software to create the braille. I then, exported it as an image (tiff). Next I imported it into Corel. Zoomed in on the bitmap and then created a .0621 circle, which I placed one over each braille dot. Once I finished that step, I deleted the bitmap and grouped the dots together. I filled them with black so they would raster. ( I have the license to do Accent Systems raster ball braille and their rasters are .062 and friction fit when using the engraving cutter for same)
Once I got it placed on the acrylic sign plate, I sent to the laser as a raster, 25 speed, 100 power and ran it twice. The .0621 diameter is dead perfect for the friction fit. Now mind you, it took me a couple of tries to get this worked out but I'm glad I did. Saves having to do the plate on the Vision and do a second setup.