Place a corner of it on the end of a table, clamp down the other side, and have a good whack at it with a hammer (hard). If it didn't break, it was polycarbonate. - vivek16 [more]
After building two very sophisticated Vex robots, I discovered that the Vex kits have many possible implications in FRC, especially for those teams who do not have huge budgets or lots of storage space. This White Paper discusses some of the many possible implications of using Vex Robotics Kits in FRC.
Place a corner of it on the end of a table, clamp down the other side, and have a good whack at it with a hammer (hard). If it didn't break, it was polycarbonate. - vivek16 [more] 
