If you are trying to get a pen apart or a part off a pen , heat works for both CA and Epoxy . Not allot of heat though or you could damage the good parts . About 150 degrees will soften the glue bond enough to disassemble most glued parts . This works great if you get a tube stuck halfway into a blank . I use a soldering iron held in the center of the tube for a few mins and the tube can be pulled right out .