I believe since the files are posted here as a mpc anyone can run the files and cut the parts no special software required. The Trick is getting 1/2 inch Cast Acrylic. You can glue two 1/4 together too. And it must be Cast Acrylic as the Cheaper Home Center Acrylic is EXTRUDED Acrylic and will MELT and stick to the Bit and BAD things happen to the machine...
The machine has a Mechanical Bit Plate that comes out when the head goes over to the far side and the bit touches the bit plate and tells the computer the bit length. The Plastic Plate Replaces the Metal Bit Plate in a design that lets the shoe duck under the plastic plate, a problem that was solved in a few ways but this last way is the BEST in MY opinion. Find the youtube videos and you can see the various versions.
Good Luck,
AL