Remove 1 side of the protective plastic sheeting from 1 piece of plexiglass.
Lay the plexi on the floor, exposed side up, over newspaper.
Start by creating a horizon line, about 14″ from the top edge of the 3′ end of the plexi.
To mask the horizon line and tunnels, tear the masking tape in half lengthwise, and working in sections, use only the torn edge for the template lines.
From the horizon line, create your network of tunnels, roughly 2″ in width, by either using this design as your guide, or creating your own.
Tape off one 2½” border along the 3 edges of the plexi below your horizon line.
NOTE: To cut plexiglass, score a deep line, using a straightedge. Sandwich the plexiglass between an straight board (like a 2X4) and a table with the scored line about 1/2″ away from the edge of the table, and clamp it in place. Put on your safety goggles. With even pressure and a quick downward motion, snap the plexiglass along the line.