One of the methods used for fabricating ADA/Braille signs is call Raster® Braille Beads.
This is part of an exclusive patented process to insert domed beads into sign that has been drilled by the routing device automatically.
The spring-loaded tip is designed to insert the Raster® Spheres at a time. The sphere are inserted into the hole and the plunger presses the sphere securely into the hole for instant ADA-Compliance.
Because of the smaller size of this routing table it is also used for smaller acrylic, PVC and metal parts.