Here's a recent video we did on the topic. You can see the step by step procedure we used....
https://www.youtube.com/watch?v=IrNLnjjWPIU
We will be filming again tonight, and may break out T206 cards of Cy Young and Walter Johnson. It will be a last-minute decision. The only thing I may do differently is to use an everyday kitchen knife instead of a screwdriver to pry it apart. The knife blade is thinner than a screwdriver, and is thus, a bit more maneuverable.