[klondike98]

Don't know if it's the best way but I hold one lead with pliers, heat the cap with a hair dryer, then pull the other lead with another set of pliers. This "usually" causes one end of the cap's wax plug to pull out. Then I'll hold the cap in a gloved hand and push the cap guts out with a small screw driver. Sometimes I have to chip out some of the remaining wax with a knife blade before pushing out the guts. Then I clean off the outside of the cap with mineral spirits. Key is to get it hot enough to soften the wax. It seems some caps have higher melting point wax than others.